题目内容

The transporting of O2 across cell membrane is ()

A. facilitated diffusion
B. simple diffusion
C. exocytosis
D. active transport
E. endocytosis

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The environment in which the cells live directly is called ()

A. intracellular fluid
B. blood plasma
C. extracellular fluid
D. cerebrospinal fluid
E. interstitial fluid

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Which of the following membrane transports has no saturation phenomenon? ()

A. simple diffusion
B. facilitated diffusion
C. secondary active transport
D. active transport
E. sodium-calcium exchange

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The imbalance distribution of Na+ and K+ inside and outside the cell is due to ()

A. the high permeability of cell membrane to K+ in rest condition
B. the increase of the permeability of the cell membrane to Na+ when excited
C. the result that Na+ and K+ moving across the cell membrane by facilitated diffusion
D. the effect of Na+ pump
E. the effect of ATP

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The most important process maintaining the internal homeostasis is ()

A. nervous regulation
B. humoral regulation
C. autoregulation
D. positive feedback
E. negative feedback

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The transporting of O2 across cell membrane is ()

A. facilitated diffusion B. simple diffusion C. exocytosis D. active transport E. endocytosis

The environment in which the cells live directly is called ()

Which of the following membrane transports has no saturation phenomenon? ()

The imbalance distribution of Na+ and K+ inside and outside the cell is due to ()

The most important process maintaining the internal homeostasis is ()

A. facilitated diffusion
B. simple diffusion
C. exocytosis
D. active transport
E. endocytosis