Cell Biology Assessment Quiz! 7th Grade
(85).jpg "Cell Biology Assessment Quiz! 7th Grade - Quiz")
This is a cell biology assessment quiz for 7th-grade students. Cells meet a lot of functions in the body. Did you know that cells bind together to form tissues, which in turn form the organs that keep the body operational? The cells have a makeup that enables them to multiply and divide into other cells. In this quiz, you will get to see just how much you know about the cells. Do give it a shot and see how well you do!
- 1.
Arrange the following levels of organization from least complex to most complex: cells, organelles, tissues, organs, organisms, and organ systems.
- A.
Organelles, cells, tissues, organs, organ systems, organisms
- B.
Cells, organelles, tissues, organs, organ systems, organisms
- C.
Organelles, cells, organs, organ systems, tissues, organism
- D.
Cells, organelles, organs, organ systems, tissue, organism
- E.
Cells, tissues, organs, organelles, organ systems, organism
Correct Answer
A. Organelles, cells, tissues, organs, organ systems, organismsExplanation
The levels of organization in living organisms start with organelles, which are small structures within cells that perform specific functions. Cells are the basic building blocks of life and are made up of organelles. Tissues are groups of similar cells that work together to perform a specific function. Organs are made up of different types of tissues and work together to perform specific functions. Organ systems are groups of organs that work together to perform a specific function. Finally, organisms are individual living entities made up of multiple organ systems. Therefore, the correct order is organelles, cells, tissues, organs, organ systems, organisms.Rate this question:
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- 2.
The respiratory system of the human body works with the circulatory system to deliver oxygen to the body's cells. Likewise, the digestive system works with the circulatory system to deliver glucose to the cells. What cellular process is affected by these interactions?
- A.
Photosynthesis
- B.
Symbiosis
- C.
Osmosis
- D.
Cellular Respiration
- E.
Transpiration
Correct Answer
D. Cellular RespirationExplanation
The respiratory system and circulatory system work together to deliver oxygen to the body's cells, which is necessary for cellular respiration. Cellular respiration is the process by which cells convert glucose and oxygen into energy, carbon dioxide, and water. Therefore, the interactions between the respiratory and circulatory systems affect cellular respiration.Rate this question:
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- 3.
Structures found in a plant cell, but not an animal cell, include the following:
- A.
Chloroplasts, a cell wall, and a large vacuole
- B.
Chloroplasts, a cell wall, and mitochondria
- C.
Chloroplasts, centrioles, and Golgi apparatus
- D.
Centrioles, a cell membrane, and a nucleus
- E.
Centrioles, mitochondria, and a nucleus
Correct Answer
A. Chloroplasts, a cell wall, and a large vacuoleExplanation
Plant cells have chloroplasts, which are responsible for photosynthesis, allowing plants to convert sunlight into energy. Animal cells do not have chloroplasts. Plant cells also have a cell wall, which provides structural support and protection, while animal cells do not. Additionally, plant cells have a large vacuole, which stores water, nutrients, and waste products. Animal cells may have smaller vacuoles, but not a large central vacuole like in plant cells. Therefore, the correct answer is chloroplasts, a cell wall, and a large vacuole.Rate this question:
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- 4.
The cell structure responsible for controlling which molecules enter and leave the cell and for the recognition of chemical signals is the:
- A.
Cell wall
- B.
Nuclear membrane
- C.
Mitochondria
- D.
Chloroplast
- E.
Plasma membrane
Correct Answer
E. Plasma membraneExplanation
The plasma membrane is responsible for controlling which molecules enter and leave the cell and for the recognition of chemical signals. It acts as a selectively permeable barrier, allowing certain molecules to pass through while preventing others from entering or leaving the cell. The plasma membrane also contains receptors that can recognize and bind to specific chemical signals, allowing the cell to respond to its environment. Unlike the other options listed, the plasma membrane is directly involved in regulating the movement of molecules in and out of the cell.Rate this question:
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- 5.
Which statement best describes the function of a cell?
- A.
Large organic food molecules like protein must be initially broken down. Once the broken down nutrient enters the cell, the cell will use the building blocks to synthesize organic compounds necessary for life.
- B.
Large organic food molecules like protein directly enter the cell where they are used for energy.
- C.
Large organic food molecules like protein are broken down only after they enter the cell. Once broken down, the cell will excrete the broken down substances.
- D.
The cell makes its own protein and does not need nutrients from the outside environments.
- E.
The function of the cell is to convert proteins to amino acids.
Correct Answer
A. Large organic food molecules like protein must be initially broken down. Once the broken down nutrient enters the cell, the cell will use the building blocks to synthesize organic compounds necessary for life.Explanation
This answer accurately describes the function of a cell. It states that large organic food molecules like protein need to be broken down before they can enter the cell. Once they are broken down, the cell uses the building blocks to synthesize organic compounds that are essential for life. This process highlights the role of cells in nutrient processing and synthesis of necessary compounds.Rate this question:
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- 6.
Which statement best describes ATP:
- A.
When ADP is converted to ATP, energy is released when bonds are formed.
- B.
When ATP is converted to ADP and phosphate, energy is released from the bonds that break.
- C.
ATP is a reactant of photosynthesis.
- D.
ATP is a reactant of cellular respiration.
- E.
ATP is a product in the hydrolysis of ADP.
Correct Answer
B. When ATP is converted to ADP and phosphate, energy is released from the bonds that break.Explanation
When ATP is converted to ADP and phosphate, energy is released from the bonds that break. This is because ATP is a high-energy molecule that stores energy in its phosphate bonds. When one of the phosphate groups is removed, ATP is converted to ADP (adenosine diphosphate), and the released phosphate group carries energy that can be used by the cell for various processes. This conversion of ATP to ADP is a key step in cellular energy metabolism.Rate this question:
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- 7.
Which substances are secreted at the endings of nerve cells?
- A.
Antibodies
- B.
Antigens
- C.
Neurotransmitters
- D.
Lipids
- E.
Neurons
Correct Answer
C. NeurotransmittersExplanation
Neurotransmitters are substances that are secreted at the endings of nerve cells. They are responsible for transmitting signals between nerve cells, allowing for communication within the nervous system. Neurotransmitters play a crucial role in various physiological processes, including muscle movement, cognition, and emotions. They are released from the presynaptic neuron into the synaptic cleft, where they bind to receptors on the postsynaptic neuron, initiating a response.Rate this question:
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- 8.
What structure in the amoeba below (a unicellular protist) is sometimes called a "false foot" and has a similar function to the musculoskeletal system of humans because it helps the amoeba move through its environment?
- A.
Contractile Vacuole
- B.
Nucleus
- C.
Cell Membrane
- D.
Pseudopod
- E.
Food Vacuole
Correct Answer
D. PseudopodExplanation
A pseudopod is a temporary protrusion of the cell membrane and cytoplasm in amoebas that functions as a "false foot" for movement. It allows the amoeba to extend and retract its body, similar to the way muscles and bones work in the musculoskeletal system of humans. By forming and extending pseudopods, the amoeba can change its shape and move in different directions, enabling it to navigate through its environment.Rate this question:
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- 9.
The organelle most directly involved in the synthesis of ATP is the:
- A.
Ribosome
- B.
Mitochondrion
- C.
Nucleus
- D.
Centriole
- E.
Golgi apparatus
Correct Answer
B. MitochondrionExplanation
The mitochondrion is the organelle most directly involved in the synthesis of ATP. ATP, or adenosine triphosphate, is the main energy currency of cells. The mitochondrion is often referred to as the "powerhouse" of the cell because it is responsible for producing ATP through cellular respiration. This process occurs in the inner membrane of the mitochondrion, where electrons are transferred through a series of protein complexes, resulting in the production of ATP. Therefore, the mitochondrion plays a crucial role in energy production within the cell.Rate this question:
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- 10.
The movement of water from an area of higher concentration to an area of lower concentration is known as:
- A.
Diffusion
- B.
Osmosis
- C.
Active Transport
- D.
Hydrolysis
- E.
Phagocytosis
Correct Answer
B. OsmosisExplanation
Osmosis is the correct answer because it refers to the movement of water molecules from an area of higher concentration (lower solute concentration) to an area of lower concentration (higher solute concentration) through a selectively permeable membrane. This process occurs in order to equalize the concentration of solutes on both sides of the membrane.Rate this question:
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- 11.
Identify the cellular process that best represents the diagram below:
- A.
Photosynthesis
- B.
Osmosis
- C.
Transpiration
- D.
Citric Acid Cycle
- E.
Cellular Respiration
Correct Answer
A. PhotosynthesisExplanation
The diagram represents the process of photosynthesis. Photosynthesis is the cellular process by which plants, algae, and some bacteria convert sunlight, carbon dioxide, and water into glucose and oxygen. The diagram likely shows the absorption of sunlight, the conversion of carbon dioxide and water into glucose, and the release of oxygen. This process is unique to plants and some other organisms capable of photosynthesis.Rate this question:
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- 12.
Hydrogen peroxide (H2O2) is a toxic by-product of cellular metabolism in aerobic organisms. The reaction below occurs within the cells to prevent the accumulation of hydrogen peroxide. In this reaction, catalase functions as an:
- A.
Enzyme in the breakdown of hydrogen peroxide
- B.
Enzyme in the synthesis of hydrogen peroxide
- C.
Emulsifier in the digestion of hydrogen peroxide
- D.
Indicator in the detection of hydrogen peroxide
- E.
Inhibitor preventing the digestion of hydrogen peroxide
Correct Answer
A. Enzyme in the breakdown of hydrogen peroxideExplanation
Catalase is an enzyme that functions in the breakdown of hydrogen peroxide. It catalyzes the decomposition of hydrogen peroxide into water and oxygen, thus preventing the accumulation of toxic hydrogen peroxide within cells.Rate this question:
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- 13.
Rate, on a scale of 1 – 4, 1 being the lowest and 4 being the highest, how much do you now know about cells and cell processes?
Correct Answer
1
2
3
4Explanation
The given answer options range from 1 to 4, indicating the level of knowledge about cells and cell processes. The answer "1,2,3,4" suggests that the person knows about cells and cell processes at all levels, from the lowest (1) to the highest (4). It implies that the person has a comprehensive understanding of cells and cell processes, covering a wide range of knowledge on the topic.Rate this question:
- 14.
Rate, on a scale of 1 – 4, 1 being the lowest and 4 being the highest, how interested are you now in cells and cell processes?
Correct Answer
1
2
3
4Explanation
This question asks the respondent to rate their interest in cells and cell processes on a scale of 1 to 4. The answer options provided include all possible ratings, from 1 to 4, indicating that the respondent can choose any level of interest that they feel is appropriate. The answer does not explicitly state the correct answer because there is no specific correct answer in this case; it is subjective to the individual's level of interest.Rate this question:
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