When a horizontally positioned plant responds to gravity,
auxins in the lower sides of stems cause cell elongation that bends the stem upright.
the shoot bends to grow downward, toward the force of gravity.
all parts of the plant bend upward, away from the force of gravity.
auxins in the shoot cause the growth of tendrils to pull the shoot upwards.

In which of the following ways is the function of the surface of a microsphere similar to the function of an actual cell membrane? a.both make it possible for the conditions in the interior to be different from the conditions outside. b.both provide a barrier that keeps water from flowing across it so the interior remains dry. c.both separate the rna that forms in the interior from any rna that might form in the environment. d.both can actively move molecules into the interior or out into the surrounding environment.

What will happen to a population of predators if there is a sudden, temporary increase in the number of prey? a. the population of predators will be uniform with no change. b. the population of predators will increase first and then decrease slowly. c. the population of predators will increase continuously.

Gene expression is the activation of a gent that results in a question 1 options: protein dna mitochondria