Lesson 7-8 : Plasma Membrane & Basis Of Energy

25 July 2022
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question
Phagocytosis is NOT a type of active transport.
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False
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One of the functions of cholesterol in an animal cell membrane is to
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Maintain membrane structure.
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Membrane proteins can ONLY transport materials across the plasma membrane by forming channels (pores) in the membrane.
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False
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The process by which a white blood cell or an amoeba engulfs bacteria is called phagocytosis.
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True
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Receptors are required during the process of diffusion.
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False
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Exocytosis is defined as a cell taking in a molecule.
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False
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Isotonic is a solution that has equal amounts of solute and water compared to another solution.
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True
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Which of the following terms does NOT belong? Pinocytosis Osmosis Endocytosis Active Transport
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Osmosis
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A hypertonic solution is one where the solute concentration is high relative to another solution.
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True
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Endocytosis is defined as a cell discharging a molecule out of the cell.
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False
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Crenation of red blood cells results when the red blood cells lose water into a fluid environment that contains more solutes than the cell.
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True
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White blood cells engulf bacteria through what process?
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Phagocytosis
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If you placed a red blood cell in a hypotonic solution, water would enter the cell and the cell would eventually swell up and burst (lyse).
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True
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The mechanism by which oxygen (O2) crosses a plasma membrane is ...
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Diffusion.
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All of the following are functions of membrane proteins EXCEPT cell-cell recognition. signal transduction. transport. protein synthesis. forming junctions.
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Protein synthesis.
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Endocytosis is the process of taking large molecules into the cell.
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True
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Lipid-soluble molecules would diffuse into a cell more rapidly than water soluble molecules.
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True
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Alcohol can move into a cell by simple diffusion.
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True
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Water always moves from a hypertonic solution into a hypotonic one.
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False