Bio 1a - Jordan High School Final Exam
Scientific method, scientific instruments, chemistry of life, cell theory and organelles, cells and energy
Questions and Answers
- 1.
Robert Hooke was...?
- A.
The 1st to see a cell, and named it a cell(a room); looked at cork; saw a line of cells that reminded him of rooms.
- B.
Said that al plants are multicellular
- C.
Said that the begining unit is always a cell
- D.
Was the 2nd person to see a man on earth
Correct Answer
A. The 1st to see a cell, and named it a cell(a room); looked at cork; saw a line of cells that reminded him of rooms.Explanation
Robert Hooke was the first person to see a cell and named it a cell (a room). He observed cork and noticed a line of cells that resembled rooms, leading him to coin the term "cell."Rate this question:
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- 2.
What does the Cell Theory state?
- A.
That all living things are made of cells
- B.
Every cell has only one nucleus
- C.
That plants cannot have cells
- D.
Animals are only one that have cells
Correct Answer
A. That all living things are made of cellsExplanation
The Cell Theory states that all living things are made of cells. This theory, proposed by Matthias Schleiden and Theodor Schwann in the 19th century, revolutionized the understanding of biology. It states that cells are the basic building blocks of life and that all organisms are composed of one or more cells. This theory also includes the idea that cells come from pre-existing cells through cell division. The discovery of the Cell Theory laid the foundation for modern biology and our understanding of how living organisms function and interact.Rate this question:
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- 3.
True or False? Cell is the basic unit of life...
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The cell is considered the basic unit of life because it is the smallest structural and functional unit of an organism. Cells are responsible for carrying out all the necessary processes of life, such as metabolism, reproduction, and response to stimuli. They are able to perform these functions due to the presence of various organelles and molecules within the cell. Therefore, it can be concluded that the cell is indeed the fundamental building block of all living organisms.Rate this question:
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- 4.
True or False? The beginning unit is always a cell. it starts from cells to tissues to organs to organ system to organisms.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because the beginning unit in the hierarchical organization of living organisms is indeed the cell. Cells are the basic building blocks of life and they come together to form tissues, which then combine to form organs, organ systems, and ultimately complete organisms. This progression from cells to organisms is a fundamental concept in biology.Rate this question:
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- 5.
According to cell theory, all cells
- A.
Are eukaryotes
- B.
Are prokaryotes
- C.
Have nuclei
- D.
Come from other cells
Correct Answer
D. Come from other cellsExplanation
There are prokaryotic (means does not have a true nucleus) and eukaryotic (means does have a true nucleus) cells. There are some cells do not have a true nucleus. But all cells can only come from other cells.Rate this question:
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- 6.
The storage of hereditary information in a eukaryotic cell is in the
- A.
Cytoplasm
- B.
Nucleus
- C.
Centrioles
- D.
Lysosomes
Correct Answer
B. NucleusExplanation
The nucleus has the DNA (hereditary info), the cytoplasm is the fluid that the organelles of the cell float in, the centrioles aide in mitosis, and the lysosomes break down materials in the cell.Rate this question:
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- 7.
A(n) _____________ is a group of different tissues that work together to perform a certain function.
- A.
Organ system
- B.
Organ
- C.
Cell
- D.
Organelle
Correct Answer
B. OrganExplanation
Cells make up tissues. Tissues make up organs. Organs make up organ systems. Organ systems make up organisms.Rate this question:
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- 8.
Your heart functions because of tissues like cardiac muscle, blood and connective tissues. At which level of organization is your heart?
- A.
An organ system
- B.
An organ
- C.
A cell
- D.
An organelle
Correct Answer
B. An organExplanation
The different tissues are working together to perfom one job.Rate this question:
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- 9.
What is the movement of substances into and out of a cell without the use of energy called?
- A.
Active transport
- B.
Passive transport
- C.
Exocytosis
- D.
Endocytosis
Correct Answer
B. Passive transportExplanation
Active and passive transport involves materials entering and leaving the cell. But, active requires energy and passive does not. Exocytosis means things leave the cell only. Endocyotosis means things enter the cell only.Rate this question:
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- 10.
What happens during active transport?
- A.
Water moves passively through a membrane
- B.
The movement of particles occurs spontaneously in the opposite direction of concentration.
- C.
Cells must use stored energy to move substances across a membrane
- D.
Cells allow the spontaneuous movement of particles across the membrane.
Correct Answer
C. Cells must use stored energy to move substances across a membraneExplanation
Since the question asked about active you are looking for an answer the describes using energy. Answers a, b, d all refer to passive transport which does not require energyRate this question:
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- 11.
The organelle that is referred to as the "control center" of the cell is the
- A.
Nucleus
- B.
Nucleolus
- C.
Mitochondrion
Correct Answer
A. NucleusExplanation
The nucleus is referred to as the "control center" of the cell because it contains the cell's genetic material, DNA. It regulates all the activities of the cell by controlling the synthesis of proteins and the replication of DNA. The nucleus also plays a crucial role in cell division and is responsible for transmitting genetic information to the next generation of cells. Therefore, the nucleus is considered the control center as it houses the instructions and machinery necessary for the cell's functioning and reproduction.Rate this question:
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- 12.
These vesicles that are produced in the Golgi apparatus contain digestive enzymes that rid the cell of dead or worn out parts
- A.
Peroxisomes
- B.
Lysosomes
- C.
Chromosomes
Correct Answer
B. LysosomesExplanation
Lysosomes are organelles produced in the Golgi apparatus that contain digestive enzymes. These enzymes help break down and recycle cellular waste, including dead or worn-out parts. Lysosomes play a crucial role in maintaining cellular health and waste management within the cell.Rate this question:
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- 13.
A long, single, whip-like tail, this special organelle aids in locomotion (movement) for some types of cells or unicellular organisms
- A.
Flagellum
- B.
Cilium
- C.
Villus
Correct Answer
A. FlagellumExplanation
The correct answer is flagellum. A flagellum is a long, whip-like tail that helps with the movement of certain cells or unicellular organisms. It acts as an organelle and aids in locomotion.Rate this question:
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- 14.
1. What does the term resolution refer to?
- A.
How big an image can be
- B.
How sharp an image can be
- C.
How many lenses a microscope uses
- D.
How much light is needed to see an image
Correct Answer
B. How sharp an image can beExplanation
Resolution refers to how sharp an image can be. It is a measure of the level of detail that can be observed in an image. Higher resolution means that more fine details can be distinguished, resulting in a sharper and clearer image. This can be influenced by factors such as the number of pixels in a digital image, the quality of the optics used, and the ability of the imaging system to accurately capture and reproduce the details of the object being observed.Rate this question:
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- 15.
Which organelle is the control center of the cell?
- A.
Chloroplast
- B.
Mitochondrian
- C.
Nucleus
- D.
Ribosome
Correct Answer
C. NucleusExplanation
The nucleus is the control center of the cell because it contains the cell's genetic material, DNA. DNA carries the instructions for the cell's growth, development, and reproduction. The nucleus also regulates the cell's activities by controlling the synthesis of proteins through the production of messenger RNA (mRNA). Additionally, the nucleus plays a role in cell division, as it is responsible for the replication and distribution of DNA during mitosis and meiosis.Rate this question:
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- 16.
What is the function of the cell wall?
- A.
To prevent oxygen from entering the cell
- B.
To prevent water from entering the cell
- C.
To perform different functions in each cell
- D.
To protect and support the cell
Correct Answer
D. To protect and support the cellExplanation
The cell wall has the function of protecting and supporting the cell. It provides a rigid structure that helps maintain the shape and integrity of the cell. Additionally, the cell wall acts as a barrier, protecting the cell from external mechanical stresses and preventing the entry of harmful substances.Rate this question:
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- 17.
What's true in these statements about Cell Theory?
- A.
Studying cells is important because they're the origin of life and improve medicine
- B.
All Living things are made of cells and cells come from other cells
- C.
They vary is size and shape because they have specific jobs
- D.
All of the above are true
Correct Answer
D. All of the above are trueExplanation
The given statements about Cell Theory are all true. Studying cells is important because they are the origin of life and contribute to advancements in medicine. All living things are indeed made up of cells, and cells themselves are derived from pre-existing cells through the process of cell division. Cells vary in size and shape because they have specific functions and roles within an organism. Therefore, the correct answer is that all of the above statements are true.Rate this question:
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- 18.
Prokaryotic and Eukaryotic are both living. They both also have the 8 charecteristics of life.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Both prokaryotic and eukaryotic organisms are living because they possess the eight characteristics of life. These characteristics include the ability to reproduce, respond to stimuli, grow and develop, maintain homeostasis, obtain and use energy, have a defined lifespan, exhibit organization, and adapt to their environment. Therefore, it is true that both prokaryotic and eukaryotic organisms have these characteristics and are considered living entities.Rate this question:
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- 19.
Viruses have no organelle, no nucleus, and are not living. (Not made of Cells) They're also smaller than cells.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Viruses are considered non-living because they lack essential characteristics of living organisms. They do not have organelles or a nucleus, which are vital components of cells. Additionally, viruses are much smaller in size compared to cells. These factors contribute to the understanding that viruses are not living entities. Therefore, the statement "Viruses have no organelle, no nucleus, and are not living" is true.Rate this question:
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- 20.
Chloroplasts produce energy. They do photosynthesis (make glucose)
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Chloroplasts are responsible for photosynthesis, a process in which they convert sunlight, water, and carbon dioxide into glucose and oxygen. This glucose serves as a source of energy for the plant. Therefore, it is correct to say that chloroplasts produce energy through photosynthesis.Rate this question:
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- 21.
Lysozomes are like
- A.
Garbage Disposals, Break down Wastes
- B.
Parasites, Pick on the Cell
- C.
Trash Cans, Store Wastes
Correct Answer
A. Garbage Disposals, Break down WastesExplanation
Lysozomes can be compared to garbage disposals as they both have the function of breaking down and disposing of waste. Just like a garbage disposal grinds up food waste, lysozomes break down cellular waste and debris. This comparison highlights the role of lysozomes in the cell's waste management system.Rate this question:
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- 22.
Who discovered cells?
- A.
Schwann
- B.
Hooke
- C.
Schleiden
Correct Answer
B. HookeExplanation
Hooke is credited with discovering cells. In 1665, he observed thin slices of cork under a microscope and noticed small compartments resembling the cells of a monastery, which he called "cells." This observation led to the development of the cell theory, which states that cells are the basic structural and functional units of all living organisms. Schwann and Schleiden also made significant contributions to the cell theory, but Hooke's discovery of cells predates their work.Rate this question:
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- 23.
Check a difference between plant and animal cells
- A.
Plants have a cell wall
- B.
Plants have a large vacuole
- C.
Animals have cytoplasm
- D.
Animals have centrioles
- E.
Plants have leucoplasts
- F.
Animals have a cell membrane
Correct Answer(s)
A. Plants have a cell wall
B. Plants have a large vacuole
D. Animals have centrioles
E. Plants have leucoplastsExplanation
Plants have a cell wall, which provides structural support and protection to the plant cells. This is a key difference between plant and animal cells, as animal cells do not have a cell wall. Additionally, plants have a large vacuole, which helps in storing water, nutrients, and waste products. On the other hand, animals do not have a large vacuole. Another difference is that animals have centrioles, which are involved in cell division, while plants do not have centrioles. Lastly, plants have leucoplasts, which are organelles involved in storing starch and oils, whereas animals do not have leucoplasts.Rate this question:
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- 24.
What is dynamic equilibrium?
- A.
No [ ] gradient, [ ] is same on both sides, movement of particles continue, no change in net movement
- B.
Molecules moving against [ ] gradient which eventually burst
- C.
[ ] is very high on both sides, no movement of particles, large change in net movement
Correct Answer
A. No [ ] gradient, [ ] is same on both sides, movement of particles continue, no change in net movementExplanation
Dynamic equilibrium refers to a state in which there is no concentration gradient, meaning the concentration of particles is the same on both sides. In this state, particles continue to move, but there is no net movement or change in overall concentration. This is different from the other options provided.Rate this question:
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- 25.
Osmosis is diffusion of ONLY water molecules
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Osmosis is a specific type of diffusion that involves the movement of water molecules across a selectively permeable membrane. It occurs when there is a difference in the concentration of solutes on either side of the membrane, causing water to move from an area of lower solute concentration to an area of higher solute concentration. This process is exclusive to water molecules and does not involve the diffusion of other substances. Therefore, the statement that osmosis is the diffusion of only water molecules is true.Rate this question:
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- 26.
Diffusion is movement of molecules from low [ ] to high [ ]
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Diffusion is the movement of molecules from an area of high concentration to an area of low concentration. This process occurs in order to achieve equilibrium, where the concentration of molecules is equal throughout the space. Therefore, the correct answer is False, as molecules move from high to low concentration during diffusion.Rate this question:
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- 27.
Cell shrinks
- A.
Iso
- B.
Hypo
- C.
Hyper
Correct Answer
C. HyperExplanation
In the context of cell biology, the term "hyper" refers to a state of increased concentration or activity. When a cell shrinks, it means that there is a loss of water or solutes from the cell, causing it to decrease in size. This process is known as cell shrinkage or cell dehydration. Therefore, the correct answer "hyper" indicates that the cell is in a hyperosmotic or hypertonic environment, where the concentration of solutes outside the cell is higher than inside, leading to water loss and cell shrinkage.Rate this question:
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- 28.
Movement of water, but no NET movement
- A.
Iso
- B.
Hypo
- C.
Hyper
Correct Answer
A. IsoExplanation
The term "iso" refers to isotonic, which means there is an equal concentration of solutes inside and outside the cell. In this context, "movement of water, but no NET movement" suggests that water is moving freely across the cell membrane in both directions, but there is no overall change in the volume or concentration of the cell. This indicates that the concentration of solutes inside and outside the cell is balanced, resulting in an isotonic solution.Rate this question:
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- 29.
What is the first thing scientists do?
- A.
Experiment
- B.
Observe and ask questions
- C.
Conclude
- D.
Report to others
Correct Answer
B. Observe and ask questionsExplanation
Scientists begin their scientific inquiry by observing and asking questions. This is the initial step in the scientific method, where scientists carefully observe a phenomenon or problem and formulate questions to investigate further. By observing and asking questions, scientists gather information and gain a deeper understanding of the subject matter before proceeding with experiments, drawing conclusions, and reporting their findings to others.Rate this question:
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- 30.
When scientists make an educated guest this is called ________
- A.
Hypothesis
- B.
Guess
- C.
Estimation
- D.
Conclusion
Correct Answer
A. HypothesisExplanation
When scientists make an educated guess, it is called a hypothesis. A hypothesis is a proposed explanation or prediction based on existing knowledge and observations. It is a starting point for scientific investigations and experiments, which can then be tested and either supported or rejected through further research and evidence. Hypotheses are essential in the scientific method as they allow scientists to formulate and explore potential explanations for phenomena or to make predictions about the outcome of experiments.Rate this question:
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- 31.
Once a scientist has decided on a question he or she wants to ask, then he or she needs to.....?
- A.
Get started on the experiment right away
- B.
Ask more questions
- C.
Research their topic in order to find out what others know
- D.
Collect data
Correct Answer
C. Research their topic in order to find out what others knowExplanation
Once a scientist has decided on a question he or she wants to ask, it is important to research their topic in order to find out what others know. This step is crucial as it helps the scientist gain a comprehensive understanding of the existing knowledge and research in the field. By reviewing previous studies and literature, the scientist can identify any gaps in knowledge and formulate their own hypothesis. This research also helps in designing the experiment and methodology effectively, ensuring that the scientist is building upon existing knowledge and contributing to the scientific community.Rate this question:
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- 32.
When a scientist is working on an experiment they need to have a control group and an ___________________ group?
- A.
Fun
- B.
Growing
- C.
Experimental
- D.
Large
Correct Answer
C. ExperimentalExplanation
When a scientist is working on an experiment, they need to have a control group and an experimental group. The control group is used as a comparison and does not receive the experimental treatment, while the experimental group is the group that receives the treatment or intervention being studied. This allows the scientist to compare the results between the two groups and determine the effects of the treatment.Rate this question:
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- 33.
Scientist organize the data they find in a.....?
- A.
Data Collection Table or Graph
- B.
On a paper
- C.
Right it on the back of their hands
- D.
Have their friends organize it
Correct Answer
A. Data Collection Table or GraphExplanation
Scientists organize the data they find in a data collection table or graph. This allows them to visually represent and analyze the information they have gathered. By organizing the data in this way, scientists can easily identify patterns, trends, and relationships between variables. It also helps them to make accurate interpretations and draw conclusions based on the data. Additionally, having a structured format like a table or graph allows other researchers to easily understand and replicate the study, contributing to the overall advancement of scientific knowledge.Rate this question:
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- 34.
When a scientist decides whether or not his/her hypothesis is true or false and can explain the reasoning this is called
- A.
The end
- B.
Do it again
- C.
Description
- D.
Drawing a conclusion
Correct Answer
D. Drawing a conclusionExplanation
Drawing a conclusion refers to the process of reaching a decision or forming a judgment based on the evidence or information available. In the context of a scientist, it means evaluating the results of an experiment or study and determining whether the hypothesis is supported or refuted. This involves analyzing the data, considering any limitations or confounding factors, and making an informed judgment about the validity of the hypothesis.Rate this question:
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- 35.
Would a scientist want to test more than one item (variable) at a time?
- A.
Yes
- B.
No
Correct Answer
B. NoExplanation
A scientist would not want to test more than one item (variable) at a time because it would make it difficult to determine which variable is causing the observed results. Testing multiple variables simultaneously would lead to confounding variables, making it challenging to establish a cause-and-effect relationship. By testing one variable at a time, scientists can accurately identify the impact of each variable on the outcome, ensuring reliable and valid results.Rate this question:
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- 36.
A scientist uses a control group because?
- A.
So the data from the experimental group can be compared to the data in a control group
- B.
So that they can test again and again
- C.
So that they can make more than one hypothesis
- D.
So that can have others test the experiment
Correct Answer
A. So the data from the experimental group can be compared to the data in a control groupExplanation
A control group is used in scientific experiments to provide a baseline for comparison. By having a control group that is not exposed to the experimental treatment, the scientist can compare the results from the experimental group to the control group. This allows them to determine if any observed effects are due to the treatment or if they are simply occurring naturally. By comparing the data from both groups, the scientist can draw conclusions about the effectiveness or impact of the experimental treatment.Rate this question:
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- 37.
Should you use people's opinions, or personal beliefs to help you find the answer to a scientific problem?
- A.
Yes
- B.
No
Correct Answer
B. NoExplanation
Using people's opinions or personal beliefs to find the answer to a scientific problem is not recommended. Science is based on evidence, facts, and objective observations, not subjective opinions. Personal beliefs can be biased and influenced by various factors, whereas scientific inquiry relies on empirical data and rigorous testing. Relying on opinions or personal beliefs can lead to inaccurate conclusions and hinder the progress of scientific research. Therefore, it is important to base scientific problem-solving on objective evidence rather than subjective viewpoints.Rate this question:
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- 38.
What does it take to be a scientist?
- A.
A goof ball
- B.
Being practical
- C.
Common sense
- D.
To be curious and to like to find answers to problems
Correct Answer
D. To be curious and to like to find answers to problemsExplanation
To be a scientist, one needs to possess curiosity and a desire to find answers to problems. This is because scientists are driven by a natural inquisitiveness and a passion for uncovering new knowledge. They are constantly asking questions, exploring different avenues, and seeking solutions to various challenges. This curiosity fuels their motivation to conduct research, experiment, and analyze data in order to gain a deeper understanding of the world around them. Ultimately, it is this curiosity and drive to find answers that distinguishes a scientist and enables them to make significant contributions to their field.Rate this question:
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- 39.
What is the first thing scientists do?
- A.
Experiment
- B.
Observe and ask questions
- C.
Conclude
- D.
Report to others
Correct Answer
B. Observe and ask questionsExplanation
Scientists typically begin their scientific inquiry by observing and asking questions. This is the initial step in the scientific method, where scientists make careful observations of a phenomenon or a problem and then formulate questions to better understand it. By observing and asking questions, scientists gather information and data that will guide them in designing experiments and conducting further research. This step is crucial as it helps scientists identify patterns, make predictions, and develop hypotheses that can be tested through experiments.Rate this question:
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- 40.
When scientists make an educated guest this is called ________
- A.
Hypothesis
- B.
Guess
- C.
Estimation
- D.
Conclusion
Correct Answer
A. HypothesisExplanation
When scientists make an educated guess, it is called a hypothesis. A hypothesis is a proposed explanation or prediction based on limited evidence or observations. It is a starting point for scientific investigations and is used to guide further research and experimentation. Scientists formulate hypotheses to test their ideas and theories, and they can be either supported or disproven through empirical evidence.Rate this question:
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- 41.
Once a scientist has decided on a question he or she wants to ask, then he or she needs to.....?
- A.
Get started on the experiment right away
- B.
Ask more questions
- C.
Research their topic in order to find out what others know
- D.
Collect data
Correct Answer
C. Research their topic in order to find out what others knowExplanation
After formulating a question, scientists need to research their topic in order to find out what others already know. This is important to avoid duplicating previous work and to build upon existing knowledge. By reviewing existing literature, scientists can gain insights, identify gaps in knowledge, and refine their research question. This step is crucial for designing experiments that contribute to the scientific community's understanding of the subject matter.Rate this question:
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- 42.
When a scientist is working on an experiment they need to have a control group and an ___________________ group?
- A.
Fun
- B.
Growing
- C.
Experimental
- D.
Large
Correct Answer
C. ExperimentalExplanation
When a scientist is working on an experiment, they need to have a control group and an experimental group. The control group is used as a baseline for comparison, as it does not receive the experimental treatment. On the other hand, the experimental group is exposed to the variable being tested. By comparing the results between the control and experimental groups, scientists can determine the effects of the independent variable and draw conclusions about its impact.Rate this question:
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- 43.
Scientist organize the data they find in a.....?
- A.
Data Collection Table or Graph
- B.
On a paper
- C.
Right it on the back of their hands
- D.
Have their friends organize it
Correct Answer
A. Data Collection Table or GraphExplanation
Scientists organize the data they find in a data collection table or graph. This allows them to visually represent and analyze the data in a structured and systematic manner. By organizing the data in this way, scientists can easily identify patterns, trends, and relationships within the data, making it easier to draw meaningful conclusions and make informed decisions based on the findings.Rate this question:
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- 44.
When a scientist decides whether or not his/her hypothesis is true or false and can explain the reasoning this is called
- A.
The end
- B.
Do it again
- C.
Description
- D.
Drawing a conclusion
Correct Answer
D. Drawing a conclusionExplanation
Drawing a conclusion refers to the process in which a scientist evaluates the results of an experiment or study and determines whether their hypothesis is supported or refuted. This involves analyzing the data collected, considering any limitations or errors, and making a judgment based on the evidence. Drawing a conclusion requires the scientist to explain their reasoning and provide a logical explanation for their findings. It is an essential step in the scientific method as it helps to establish the validity and reliability of the hypothesis.Rate this question:
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- 45.
Would a scientist want to test more than one item (variable) at a time?
- A.
Yes
- B.
No
Correct Answer
B. NoExplanation
A scientist would not want to test more than one item (variable) at a time because it would make it difficult to determine which variable is causing the observed effects. By testing one variable at a time, the scientist can isolate and control the factors being tested, allowing them to accurately determine the cause and effect relationship between variables. Testing multiple variables simultaneously would introduce confounding variables and make it challenging to draw valid conclusions from the experiment.Rate this question:
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- 46.
A scientist uses a control group because?
- A.
So the data from the experimental group can be compared to the data in a control group
- B.
So that they can test again and again
- C.
So that they can make more than one hypothesis
- D.
So that can have others test the experiment
Correct Answer
A. So the data from the experimental group can be compared to the data in a control groupExplanation
A scientist uses a control group because it provides a baseline for comparison. By having a control group that is not exposed to the experimental treatment, the scientist can compare the results of the experimental group to the control group and determine the effect of the treatment. This helps to eliminate confounding variables and ensure that any observed differences are due to the treatment being tested.Rate this question:
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- 47.
Should you use people's opinions, or personal beliefs to help you find the answer to a scientific problem?
- A.
Yes
- B.
No
Correct Answer
B. NoExplanation
Using people's opinions or personal beliefs to find the answer to a scientific problem is not recommended because science relies on evidence-based research and objective analysis. Personal opinions and beliefs are subjective and can be influenced by biases, emotions, and personal experiences, which may lead to inaccurate or biased conclusions. Scientific problems require objective and unbiased methods such as experimentation, data collection, and analysis to arrive at reliable and valid results. Therefore, it is important to rely on scientific methods rather than personal opinions or beliefs when seeking answers to scientific problems.Rate this question:
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- 48.
What does it take to be a scientist?
- A.
A goof ball
- B.
Being practical
- C.
Common sense
- D.
To be curious and to like to find answers to problems
Correct Answer
D. To be curious and to like to find answers to problemsExplanation
To be a scientist, it is important to have a curious nature and enjoy finding solutions to problems. Scientists are driven by a desire to explore and understand the world around them. They are constantly asking questions and seeking answers through research and experimentation. This curiosity and passion for problem-solving are essential qualities that enable scientists to make new discoveries and contribute to the advancement of knowledge in their field.Rate this question:
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- 49.
What is the correct equation for photosynthesis?
- A.
6CO2+6H2O_FOOD_C6H12O6+6O2
- B.
6CO2+6H2O_LIGHT_C6H12O6+6O2
- C.
6CO2+6H2O_ENERGY_C6H12O6+6O2
- D.
6CO2+6H2O_SUNLIGHT_C6H12O6+6O2
Correct Answer
D. 6CO2+6H2O_SUNLIGHT_C6H12O6+6O2Explanation
The correct equation for photosynthesis is 6CO2+6H2O_SUNLIGHT_C6H12O6+6O2. This equation represents the process of photosynthesis, where carbon dioxide (CO2) and water (H2O) are converted into glucose (C6H12O6) and oxygen (O2) in the presence of sunlight.Rate this question:
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- 50.
Where does the energy for photosynthesis come from?
- A.
ATP
- B.
Sunlight
- C.
Water
- D.
Energy
Correct Answer
B. SunlightExplanation
Photosynthesis is the process by which plants convert sunlight into chemical energy in the form of glucose. Sunlight provides the necessary energy for the photosynthetic reactions to occur. During photosynthesis, plants use the energy from sunlight to convert carbon dioxide and water into glucose and oxygen. This process takes place in the chloroplasts of plant cells, where sunlight is absorbed by chlorophyll molecules and used to power the synthesis of ATP (adenosine triphosphate), a molecule that stores and transports energy within cells. Therefore, sunlight is the ultimate source of energy for photosynthesis.Rate this question:
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