Property of the plasma membrane that allows some substances to pass, but prohibits the movement of others.
What will be an ideal response?
selectively permeable
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Engulfing-phagocytic cells of innate immunity of vertebrates include _____
I) neutrophils II) macrophages III) dendritic cells IV) natural killer cells A) I and III B) II and IV C) I and IV D) I, II, and III E) I, II, III, and IV
A simplified form of the Fick diffusion equation is J = KA (C1-C2) where J is the rate of diffusion, K is a constant, A is the area across which diffusion is occurring, and C1 and C2 are the concentrations of the substance on either side of the membrane. Given this, which of the following would INCREASE the rate of diffusion of a solute?
A. An increase in C1 while holding C2 constant B. An equivalent decrease in both C1 and C2 C. An equivalent increase in both C1 and C2 D. A decrease in D E. A decrease in A
Blood supply is not necessary for tumors to grow
a. true b. false
Jelly-like material inside the cell:
a. cytoplast b. cytosol c. cytocell