03_ActiveLecturePRS

03_ActiveLecturePRS - Which component of the cell membrane...

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Which component of the cell membrane is primarily responsible for the membrane’s ability to form a physical barrier between the cell’s internal and external environments? 1. Phospholipid bilayer 2. Glycocalyx 3. Peripheral proteins 4. Proteoglycans
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Which type of integral protein allows water and small ions to pass through the cell membrane? 1. Receptor proteins 2. Carrier proteins 3. Channel proteins 4. Recognition proteins
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Which statement(s) correctly distinguish between cytoplasm and cytosol? 1. Cytosol has a higher concentration of suspended proteins than cytoplasm. 2. Cytosol is the intracellular fluid and is composed of nutrients, ions, proteins, and wastes and cytoplasm is the term for all material located between the cell membrane and nucleus. 3. Potassium ion concentration is higher in cytoplasm than in cytosol. 4. Cytosol and cytoplasm refer to the same substance.
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What is/are the major difference(s) between cytosol and extracellular fluid? 1. Cytosol has a higher concentration of sodium ions 2. ECF is a transport medium only, whereas cytosol has some carbohydrates and amino acids 3. Cytosol has a higher concentration of potassium ions 4. 2 and 3
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Which of the listed organelles is non- membranous and correctly paired with its function? 1. Microvilli/movement of materials over cell surface 2. Ribosomes/protein synthesis 3. Mitochondria/produces ATP required by cell 4. Microtubules/increase surface area for absorption
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What does the presence of many mitochondria imply about a cell’s energy requirements? 1. A high demand for energy 2. A low demand for energy 3. Fluctuating energy needs requiring flexibility 4. Number of mitochondria provides no implication of energy needs
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large amounts of smooth endoplasmic reticulum (SER). Why? 1.
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03_ActiveLecturePRS - Which component of the cell membrane...

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