Fick's law of diffusion states that the rate of diffusion of a gas across a membrane depends on all of the following except 

A. the size of the gas molecule.
B. which membrane transport proteins are present.
C. the width of the membrane.
D. the concentration difference of the gas on the two sides of the membrane.
E. the membrane surface area.


B. which membrane transport proteins are present.

Biology & Microbiology

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The above figure demonstrates

a. imprinting behavior. b. displaying instinctive behavior. c. feeding a social parasite. d. a learned behavior. e. all of these.

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Assuming one glucose molecule being metabolized, what is the net yield of ATP in the cytoplasm under aerobic

conditions? a. 1 b. 2 c. 32 d. 34 e. 36

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The role of maternal effect genes in Drosophila is to:

a. code for the production of yolk proteins. b. prepare the female fly for reproduction. c. control the early stages of Drosophila development. d. control the development of the pupa. e. control the shape and size of the eggs produced.

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Which organelle contains almost all of the genetic material of the cell?

Nucleus Nucleolus Rough endoplasmic reticulum Cytoplasm

Biology & Microbiology