Unit 3 Biology Exam

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    What is the function of a hand?

    • Pick things up
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Unit 3 Biology Exam - Quiz
About This Quiz

This is an exam over chapter 3 and the class notes.

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  • 2. 

    What is a cell?

    • Basic unit of Life

    • Large Organism

    • Bacteria

    Correct Answer
    A. Basic unit of Life
    Explanation
    A cell is the basic unit of life. It is the smallest functional and structural unit of an organism. Cells are responsible for carrying out all the necessary functions of life, such as metabolism, growth, and reproduction. They are the building blocks of all living organisms, from simple bacteria to complex multicellular organisms. Each cell contains genetic material, organelles, and a cell membrane that separates it from its surroundings. Cells can vary in size, shape, and function, but they all share the fundamental characteristics that define life.

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  • 3. 

    Multicellular means made up of many cells.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement "Multicellular means made up of many cells" is true. Multicellular organisms are composed of multiple cells that work together to perform various functions. These organisms can range from simple organisms like sponges to complex organisms like humans. The cells in multicellular organisms are specialized and organized into tissues, organs, and systems to carry out specific tasks and maintain the overall functioning of the organism. Therefore, the answer is true.

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  • 4. 

    Your heart is an example of an organ?

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The heart is indeed an example of an organ. An organ is a specialized structure composed of different types of tissues that work together to perform specific functions in the body. The heart is a vital organ that pumps blood throughout the body, supplying oxygen and nutrients to various tissues and organs. It is made up of cardiac muscle tissue, connective tissue, and specialized cells that regulate its rhythm. Therefore, the statement "Your heart is an example of an organ" is true.

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  • 5. 

    What are the 2 types of cells? (Choose 2)

    • Prokaryotic

    • Newkaryotic

    • Threukaryotic

    • Eukaryotic

    Correct Answer(s)
    A. Prokaryotic
    A. Eukaryotic
    Explanation
    The correct answer is Prokaryotic and Eukaryotic. Prokaryotic cells are simple cells that do not have a nucleus or membrane-bound organelles, while Eukaryotic cells are complex cells that have a nucleus and membrane-bound organelles. These two types of cells differ in their structure and organization, with Eukaryotic cells being more advanced and capable of performing more complex functions.

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  • 6. 

    If we are multicellular organisms, then which is true:

    • We are made out of many cells

    • We are made out of 1 large

    • It is not true, we are unicellular

    Correct Answer
    A. We are made out of many cells
    Explanation
    The correct answer is that multicellular organisms are made out of many cells. This means that the bodies of multicellular organisms are composed of multiple cells working together to form tissues, organs, and organ systems. Each cell has a specific function and contributes to the overall functioning of the organism. This is in contrast to unicellular organisms, which are made up of only one cell and can carry out all necessary life functions on their own.

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  • 7. 

    A Cell is the basic unit of life?

    • True

    • False

    • Both

    Correct Answer
    A. True
    Explanation
    The statement is true because a cell is indeed the basic unit of life. Cells are the smallest structural and functional units of living organisms and are responsible for carrying out all the necessary processes for life. They are capable of self-reproduction and contain all the necessary components, such as DNA, proteins, and organelles, to perform their functions. Without cells, life as we know it would not exist.

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  • 8. 

    Choose all the organs in the list (hint: there are 3)

    • Toe

    • Heart

    • Brain

    • Finger

    • Arm

    • Lungs

    • Nose

    • Hair

    Correct Answer(s)
    A. Heart
    A. Brain
    A. Lungs
    Explanation
    The question asks for a list of organs, and the correct answer is "Heart, Brain, Lungs." These are all organs found in the human body. The other options listed, such as "Toe, Finger, Arm, Nose, and Hair," are not organs but rather body parts or features.

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  • 9. 

    What stores water and waste in a cell, kind of like a sewer?

    • Vacuole

    • Mitochondria

    • Cell Wall

    Correct Answer
    A. Vacuole
    Explanation
    The vacuole is a structure in a cell that stores water and waste materials. It acts as a storage compartment, similar to a sewer, where the cell can store excess water and waste products. The vacuole also helps maintain the cell's shape and structure. Mitochondria are responsible for producing energy in the cell, while the cell wall provides support and protection. Therefore, the correct answer is vacuole.

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  • 10. 

    What is part of the cell theory:

    • Every living thing is made up of cells

    • Cells are small

    • Cells help an organism to live

    Correct Answer
    A. Every living thing is made up of cells
    Explanation
    The cell theory states that every living thing is made up of cells. This means that all organisms, from the simplest to the most complex, are composed of cells as their basic structural and functional units. This theory was proposed by scientists Schleiden and Schwann in the 19th century and has since become a fundamental principle in biology. It revolutionized our understanding of life and laid the foundation for the field of cell biology.

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  • 11. 

    A Human is an example of a...

    • Cell

    • Organ

    • Organism

    Correct Answer
    A. Organism
    Explanation
    A human is an example of an organism because an organism refers to any living thing that can carry out basic life processes such as reproduction, growth, and response to stimuli. Humans possess these characteristics as they are capable of reproducing, growing and developing, and responding to their environment. Moreover, humans are made up of various organ systems that work together to maintain their overall functioning, making them a complex and highly organized example of an organism.

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  • 12. 

    The word semi-permeable means to let everything into the cell

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The word semi-permeable actually means to allow only certain substances to pass through the cell membrane while restricting others. It refers to the property of a membrane that selectively allows the passage of certain molecules or ions based on their size, charge, or other characteristics. Therefore, the statement that semi-permeable means to let everything into the cell is incorrect.

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  • 13. 

    Unicellular means that the organism is made up of many cells.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement "Unicellular means that the organism is made up of many cells" is incorrect. Unicellular actually means that the organism is made up of a single cell. Therefore, the correct answer is False.

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  • 14. 

    The job of the Nucleus is to:

    • Power the cell

    • Control the cell

    • Clean the cell

    Correct Answer
    A. Control the cell
    Explanation
    The nucleus is responsible for controlling the cell. It contains the cell's genetic material, including DNA, which carries the instructions for the cell's activities. The nucleus regulates the cell's functions by directing the synthesis of proteins and other molecules needed for cellular processes. It also plays a crucial role in cell division, as it coordinates the replication and distribution of DNA during cell replication. Therefore, the correct answer is "Control the cell."

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  • 15. 

    What is part of the cell theory:

    • Cells always work together

    • In order to live, living things need billions of cells

    • Cells are the basic unit of life

    Correct Answer
    A. Cells are the basic unit of life
    Explanation
    The cell theory states that cells are the fundamental building blocks of all living organisms. This means that all living things, regardless of their complexity, are composed of cells. Cells are the smallest and most basic unit of life, capable of carrying out all the necessary functions to sustain life. They can replicate themselves and perform specific tasks within an organism. Therefore, the statement "Cells are the basic unit of life" aligns with the cell theory and is considered part of it.

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  • 16. 

    What hole-like features that cells have allow things to travel In/Out?

    • Pores

    • Pockets

    • Pipes

    Correct Answer
    A. Pores
    Explanation
    Pores are hole-like features in cells that allow things to travel in and out. These small openings in the cell membrane enable the passage of molecules, ions, and other substances. Pores play a crucial role in regulating the exchange of nutrients, waste products, and signaling molecules between the cell and its environment. They provide a pathway for substances to enter or exit the cell, maintaining cellular homeostasis and facilitating various cellular processes.

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  • 17. 

    Multicellular Specialization is

    • When 1 cell controls everything

    • When many cells attack each other

    • Many cells work together at the same job

    Correct Answer
    A. Many cells work together at the same job
    Explanation
    Multicellular specialization refers to the phenomenon where many cells work together at the same job. In multicellular organisms, different cells have specific functions and roles that contribute to the overall functioning and survival of the organism. Each cell specializes in a particular task, such as digestion, respiration, or reproduction, and they collaborate to carry out these functions efficiently. This specialization allows for division of labor and enhances the efficiency and effectiveness of the organism as a whole.

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  • 18. 

    The job of the Mitochondria is to:

    • Power the cell

    • Control the cell

    • Clean the cell

    Correct Answer
    A. Power the cell
    Explanation
    The mitochondria is responsible for powering the cell by producing energy in the form of adenosine triphosphate (ATP) through a process called cellular respiration. It is often referred to as the "powerhouse" of the cell because it generates the majority of the cell's energy. This energy is essential for various cellular processes including metabolism, growth, and movement.

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  • 19. 

    What makes Rough ER "rough"?

    • Its been in many fights

    • Ribosomes are on top of it

    • It has many holes in it

    Correct Answer
    A. Ribosomes are on top of it
    Explanation
    The term "rough" in Rough ER refers to the presence of ribosomes on its surface. Rough ER is responsible for protein synthesis, and the ribosomes attached to its membrane are involved in the production of proteins. These ribosomes give the ER a bumpy appearance, hence the term "rough." The ribosomes on the surface of Rough ER allow for the direct transfer of newly synthesized proteins into the ER for further processing and transportation.

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  • 20. 

    Name 1 structure that plants have that animals don't.

    • Cell Wall

    • Mitochondria

    • Nucleus

    Correct Answer
    A. Cell Wall
    Explanation
    Plants have a cell wall, which is a rigid structure made of cellulose that surrounds the cell membrane. This cell wall provides support and protection to plant cells, helping them maintain their shape and withstand external pressures. Animals, on the other hand, do not have a cell wall. Instead, they have a flexible cell membrane that allows for movement and interaction with their environment. Therefore, the presence of a cell wall is a unique structural feature of plants that distinguishes them from animals.

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  • 21. 

    What structure lets things In/Out of the cell?

    • Golgi

    • Cytoplasm

    • Cell Membrane

    Correct Answer
    A. Cell Membrane
    Explanation
    The cell membrane is a structure that allows things to enter and exit the cell. It acts as a barrier, controlling the movement of molecules and ions in and out of the cell. It is composed of a phospholipid bilayer with embedded proteins that facilitate the transport of substances across the membrane. This selective permeability allows the cell to maintain homeostasis by regulating the entry and exit of essential molecules, such as nutrients and waste products.

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  • 22. 

    What makes the proteins?

    • Ribosomes

    • Nucleolus

    • Smooth ER

    Correct Answer
    A. Ribosomes
    Explanation
    Ribosomes are responsible for the synthesis of proteins. They are small, spherical organelles found in the cytoplasm of cells. Ribosomes read the genetic information in mRNA (messenger RNA) and use it to assemble amino acids in the correct order to form a protein. This process is called translation. Therefore, ribosomes play a crucial role in protein synthesis, making them the correct answer to the question.

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  • 23. 

    Endocytosis is

    • Materials not moving at all

    • Materials moving into the cell

    • Materials exiting the cell

    Correct Answer
    A. Materials moving into the cell
    Explanation
    Endocytosis is the process by which materials are taken into the cell. It involves the formation of a vesicle that surrounds the material and brings it into the cell. This process is important for the uptake of nutrients, signaling molecules, and even pathogens by the cell. It allows the cell to regulate its internal environment and interact with its surroundings.

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  • 24. 

    Unicellular Specialization is when...

    • 1 cell performs all the functions of the organism

    • 1 cell does nothing

    • Many cells work together

    Correct Answer
    A. 1 cell performs all the functions of the organism
    Explanation
    Unicellular specialization refers to the phenomenon where a single cell is capable of performing all the necessary functions of an organism. This means that the cell is able to carry out processes such as reproduction, metabolism, and response to stimuli on its own, without the need for other cells. This type of specialization is commonly observed in unicellular organisms like bacteria and protozoa, where each individual cell is capable of functioning as a complete organism.

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  • 25. 

    The job of the Lysosome is to:

    • Power the cell

    • Control the cell

    • Clean the cell

    Correct Answer
    A. Clean the cell
    Explanation
    Lysosomes are responsible for cleaning the cell. They contain enzymes that break down waste materials, cellular debris, and foreign substances, such as bacteria, viruses, and toxins. These enzymes help in the digestion and recycling of cellular components, maintaining the overall cleanliness and health of the cell. By removing waste and maintaining a clean environment, lysosomes contribute to the proper functioning of the cell.

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  • 26. 

    What does structure mean?

    • How something lives

    • What something looks like

    • Its job

    Correct Answer
    A. What something looks like
    Explanation
    The term "structure" refers to the physical appearance or form of something. It pertains to the way something is built or organized, and how its different parts are arranged. It does not refer to how something lives or its job, but rather focuses on the visual characteristics and overall appearance of an object or entity.

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  • 27. 

    Exocytosis is

    • Materials not moving at all

    • Materials moving into the cell

    • Materials exiting the cell

    Correct Answer
    A. Materials exiting the cell
    Explanation
    Exocytosis refers to the process by which materials are released or transported out of the cell. It involves the fusion of vesicles containing these materials with the cell membrane, allowing their release into the extracellular space. This process is essential for various cellular functions, including the secretion of hormones, neurotransmitters, and digestive enzymes. Therefore, the correct answer is "Materials exiting the cell."

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  • 28. 

    An example of an organelle would be:

    • Brain

    • Heart

    • Cell Wall

    Correct Answer
    A. Cell Wall
    Explanation
    An example of an organelle would be the cell wall. Organelles are specialized structures within a cell that perform specific functions. The cell wall is a rigid layer that surrounds the cell membrane in plant cells, fungi, and some bacteria. It provides support and protection to the cell, maintaining its shape and preventing it from bursting under osmotic pressure. The brain and heart mentioned in the options are not organelles but rather organs found in multicellular organisms.

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  • 29. 
    What kind of solution is this? - ProProfs

    What kind of solution is this?

    • Hypotonic

    • Isotonic

    • Hypertonic

    Correct Answer
    A. Isotonic
    Explanation
    This solution is isotonic because it has the same concentration of solutes as the surrounding environment. In an isotonic solution, there is no net movement of water across the cell membrane, resulting in the cell maintaining its shape and size.

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  • 30. 

    What is part of the cell theory:

    • Cells are the largest part of an organism

    • There are no single celled organisms

    • Cells come from other cells

    Correct Answer
    A. Cells come from other cells
    Explanation
    The cell theory states that cells come from pre-existing cells. This means that new cells are formed through cell division, where a parent cell divides into two or more daughter cells. This process of cell division allows for growth, development, and repair in multicellular organisms. It also explains how single-celled organisms reproduce and give rise to new generations. Therefore, the statement "Cells come from other cells" is part of the cell theory.

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  • 31. 

    Bacteria are unicellular.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Bacteria are classified as unicellular organisms because they consist of a single cell. Unlike multicellular organisms, such as plants and animals, bacteria do not have specialized cells that perform specific functions. Instead, all the necessary functions for survival, such as reproduction, metabolism, and obtaining nutrients, are carried out within a single cell. This allows bacteria to be highly adaptable and capable of thriving in a wide range of environments.

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  • 32. 

    What is the name of the goo where the organelles are?

    • Golgi

    • Cytoplasm

    • Cell Membrane

    Correct Answer
    A. Cytoplasm
    Explanation
    The cytoplasm is the correct answer because it is the goo-like substance that fills the cell and surrounds the organelles. It is a gel-like material that contains various molecules, such as proteins, enzymes, and nutrients, necessary for the cell's functioning. The organelles, including the Golgi apparatus, are suspended within the cytoplasm. The cell membrane, on the other hand, is the outer boundary of the cell that separates the cytoplasm from the external environment.

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  • 33. 

    Plants are unicellular.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement "Plants are unicellular" is incorrect. Plants are multicellular organisms, meaning they are composed of multiple cells working together to form tissues, organs, and systems. Unicellular organisms, on the other hand, are composed of a single cell that carries out all the necessary functions for survival.

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  • 34. 

    What does the nucleus do? (hint: Choose 2)

    • Controls the cell

    • Has the DNA

    • Makes energy

    Correct Answer(s)
    A. Controls the cell
    A. Has the DNA
    Explanation
    The nucleus is responsible for controlling the cell and contains the DNA. It acts as the command center of the cell, regulating various cellular activities and processes. The DNA within the nucleus carries the genetic information that determines the characteristics and functions of the cell. Thus, the nucleus plays a crucial role in maintaining the overall structure and function of the cell.

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  • 35. 

    The Space and liquid inside a can of pop is called its...

    • Density

    • Volume

    • Surface Area

    Correct Answer
    A. Volume
    Explanation
    The space and liquid inside a can of pop is called its volume. Volume refers to the amount of space occupied by an object or substance. In the case of a can of pop, it represents the total amount of liquid that the can can hold.

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  • 36. 

    What is a solute of the solution? (hint: like sugar or Kool-Ade mix)

    • What is being mixed in

    • What it is being mixed into

    • The final product

    Correct Answer
    A. What is being mixed in
    Explanation
    The solute of a solution refers to the substance that is being mixed into another substance, known as the solvent. In this case, the solute is what is being mixed in, while the solvent is what it is being mixed into. The final product of the solution is the combination of the solute and solvent.

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  • 37. 

    Surface Area is inside the shape.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The given statement is false. Surface area is not inside the shape, but rather it refers to the total area of all the surfaces of a three-dimensional object. It includes the area of the faces, sides, and curved surfaces of the shape. Therefore, the correct answer is false.

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  • 38. 

    What structure specializes the protein?

    • Golgi

    • Cytoplasm

    • Cell Membrane

    Correct Answer
    A. Golgi
    Explanation
    The Golgi apparatus specializes the protein. The Golgi apparatus is an organelle found in eukaryotic cells that is responsible for modifying, sorting, and packaging proteins and lipids into vesicles for transport to their final destinations. It receives proteins from the endoplasmic reticulum and then processes and modifies them before sending them to the appropriate locations within the cell or for secretion outside of the cell. Therefore, the Golgi apparatus plays a crucial role in protein specialization and trafficking.

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  • 39. 

    In a prokaryotic cell, the genetic material (DNA) floats around the cell.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    In prokaryotic cells, the genetic material, DNA, is not enclosed within a nucleus like in eukaryotic cells. Instead, it floats freely in the cytoplasm of the cell. This is because prokaryotic cells lack a membrane-bound nucleus. The DNA in prokaryotic cells is typically circular and is found in a region called the nucleoid. Therefore, the statement "In a prokaryotic cell, the genetic material (DNA) floats around the cell" is true.

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  • 40. 

    When a cell turns into a brain cell, this is called...

    • Differentiation

    • Occupation

    • Separation

    Correct Answer
    A. Differentiation
    Explanation
    When a cell undergoes the process of differentiation, it transforms into a specialized cell type, such as a brain cell. This process involves the activation or repression of specific genes, leading to the development of distinct cellular characteristics and functions. Differentiation is a crucial step in the formation of complex organisms, as it allows cells to acquire specific roles and contribute to the functioning of different tissues and organs. Occupation and separation are unrelated terms and do not accurately describe the process of a cell turning into a brain cell.

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  • 41. 

    What is the difference between prokaryotes and eukaryotes?

    • Prokaryotes have membranes around organelles and eukaryotes do not

    • Eukaryotes have membranes around organelles and prokaroyes do not

    • Eukaryotes do not have a nucleus

    Correct Answer
    A. Eukaryotes have membranes around organelles and prokaroyes do not
    Explanation
    Eukaryotes have membranes around organelles and prokaryotes do not. This is because eukaryotes have membrane-bound organelles such as mitochondria, endoplasmic reticulum, and Golgi apparatus, which are responsible for various cellular functions. In contrast, prokaryotes lack these membrane-bound organelles and their cellular functions are carried out in the cytoplasm. Prokaryotes have a simpler cell structure compared to eukaryotes, with genetic material present in the form of a single circular chromosome in the nucleoid region, whereas eukaryotes have a true nucleus where the genetic material is enclosed within a nuclear membrane.

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  • 42. 

    What is a solvent of the solution? (hint: like water)

    • What is being mixed in

    • What it is being mixed into

    • The final product

    Correct Answer
    A. What it is being mixed into
    Explanation
    The correct answer is "What it is being mixed into". In a solution, the solvent is the substance that dissolves the solute. It is the component into which the solute is mixed or dissolved. The solvent is usually present in greater quantity compared to the solute.

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  • 43. 

    What is the difference between diffusion and osmosis? (Click 2 boxes)

    • There is no difference, they are the same

    • Diffusion is moving materials over a membrane

    • Diffusion makes things shake

    • Osmosis is moving materials over a membrane

    • Osmosis is water moving over a membrane

    • Osmosis is when water evaporates

    Correct Answer(s)
    A. Diffusion is moving materials over a membrane
    A. Osmosis is water moving over a membrane
    Explanation
    Diffusion is the movement of materials from an area of high concentration to an area of low concentration, and it can occur across a membrane or in a liquid or gas. Osmosis, on the other hand, specifically refers to the movement of water molecules across a selectively permeable membrane, from an area of lower solute concentration to an area of higher solute concentration. Therefore, the correct answer is that diffusion is the movement of materials over a membrane, while osmosis is the movement of water over a membrane.

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  • 44. 
    What kind of solution is this? - ProProfs

    What kind of solution is this?

    • Hypotonic

    • Isotonic

    • Hypertonic

    Correct Answer
    A. Hypertonic
    Explanation
    This solution is classified as hypertonic because it has a higher solute concentration compared to the surrounding environment. In a hypertonic solution, water molecules tend to move out of the solution and into the surrounding environment in order to balance the concentration gradient. This causes cells or organisms in the hypertonic solution to shrink or shrivel due to the loss of water.

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  • 45. 
    What kind of solution is this? - ProProfs

    What kind of solution is this?

    • Hypotonic

    • Isotonic

    • Hypertonic

    Correct Answer
    A. Hypotonic
    Explanation
    A hypotonic solution is one where the concentration of solutes outside the cell is lower than the concentration inside the cell. In this type of solution, water moves into the cell, causing it to swell and potentially burst. Therefore, the correct answer is hypotonic.

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  • 46. 

    What to prokaryotes and eukaryotes have in common? (Choose 2)

    • Nothing

    • Both are very large

    • Both help an organism live

    • Neither are types of cells

    • Both have Organelles

    Correct Answer(s)
    A. Both help an organism live
    A. Both have Organelles
    Explanation
    Prokaryotes and eukaryotes have two things in common. Firstly, both help an organism live. This means that both types of cells play a crucial role in the survival and functioning of an organism. Secondly, both prokaryotes and eukaryotes have organelles. Organelles are specialized structures within a cell that perform specific functions, such as the nucleus, mitochondria, and ribosomes. These organelles are present in both prokaryotic and eukaryotic cells, although they may differ in structure and complexity.

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  • 47. 

    What is an example of a solution?

    • Sugar

    • Juice

    • Water

    Correct Answer
    A. Juice
    Explanation
    Juice is an example of a solution because it is a homogeneous mixture of water and dissolved substances, such as sugars and flavors. In a solution, the solute (in this case, the sugars and flavors) is evenly distributed and dissolved in the solvent (water). Juice fits this description as it is a mixture of water and various dissolved substances, resulting in a uniform composition throughout the liquid.

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  • 48. 

    Directions: Click all True statements about organelles:

    • They are outside the cell

    • They are inside the cell

    • They help the cell function

    • They are like "little organs"

    • Only a few cells have them

    • They are not important

    Correct Answer(s)
    A. They are inside the cell
    A. They help the cell function
    A. They are like "little organs"
    Explanation
    Organelles are structures that are located inside the cell and play a crucial role in the cell's functioning. They are often referred to as "little organs" because they have specific functions within the cell, just like organs do in the human body. Additionally, organelles are important for the overall functioning of the cell, as they carry out various processes necessary for cell survival and growth.

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  • 49. 

    A group of specialized tissues that work together for the same job

    • Organ

    • Organelle

    • Tissue

    Correct Answer
    A. Organ
    Explanation
    An organ is a group of specialized tissues that work together for the same job. Tissues are made up of similar cells that perform a specific function, but organs are composed of different types of tissues that collaborate to carry out a specific task or function in the body. Organelles, on the other hand, are structures found within cells that perform specific functions necessary for the cell's survival. Therefore, the correct answer is organ.

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  • Apr 03, 2025
    Quiz Edited by
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  • Mar 03, 2011
    Quiz Created by
    Voisealgebra6

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