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BIO 101 EXAM 2 NVCC ACTUAL EXAM 100 REAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS
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BIO 101 EXAM 2 NVCC ACTUAL EXAM 100 REAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS
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BIO 101 EXAM 2 NVCC ACTUAL EXAM 100 REAL EXAMQUESTIONS AND CORRECT DETAILED ANSWERS
The fluid mosaic model of the membrane proposed that membranes - ANSWER:
consist of protein molecules embedded in a fluid bilayer of phospholipids
The primary structural components of the cell membrane are - ANSWER:
phospholipids and proteins
An integral membrane protein would have to be - ANSWER: amphipathic, with at
least one hydrophobic region
Why are lipids and proteins free to move laterally in membranes? - ANSWER: Weak
hydrophobic interactions in the interior of the membrane are easily disrupted
Which of the following is a characteristic feature of a carrier protein in a plasma
membrane? - ANSWER: It exhibits a specificity for a particular type of molecule
Water passes quickly through cell membranes because - ANSWER: it moves through
aquaporin channel proteins.
Submerging a red blood cell in a hypertonic solution will result in - ANSWER: the cell
wall shriveling.
What is the voltage across a membrane called? - ANSWER: membrane potential
Proteins that allow the diffusion of ions across membranes in the direction of their
concentration gradients are most likely - ANSWER: channel proteins.
The difference between pinocytosis and receptor-mediated endocytosis is that -
ANSWER: pinocytosis is nonselective in the molecules it brings into the cell,
The cellular process of synthesizing large molecules from smaller ones is defined as -
ANSWER: anabolism.
Which of the following is a statement of the first law of thermodynamics? -
ANSWER: Energy cannot be created or destroyed.
Which of the following is an example of potential rather than kinetic energy? -
ANSWER: a molecule of glucose
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