Question
The most important function of plasma membrane is that it(a) Divides the cell(b) Gives shape to the cell(c) Transports the molecules across(d) Both (a) and (b)
Step 1
The plasma membrane performs functions like cell growth, formation of intracellular junctions, and division of the cell. It also gives shape to the cell. Show more…
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Key Concepts
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What characteristics of the plasma membrane are important for the cell? Group of answer choices All of these It allows gases to diffuse in and out It allows for chemical gradients to persist between the inside and outside It allows for electrical gradients to persist between the inside and outside It prevents polar molecules from crossing, except through protein channels
All of the following about plasma membrane structure and function are correct EXCEPT (A) all plasma membranes have the identical composition and structure (B) diffusion of gases across a membrane require that the membrane be moist (C) facilitated diffusion is an example of passive transport (D) proteins serve as membrane channels (E) plasma membranes contain receptors that are specific for the molecules they uptake
SAMPLE TEST
Biology E/M Sample Test 1
The plasma membrane a. is selectively permeable. b. contains lipids that function in cell-cell recognition. c. has cell adhesion molecules that prevent cells from sticking together. d. is made of nucleic acids.
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