The phase of the bacterial growth curve in which newly inoculated cells are adjusting to their new environment, metabolizing but not growing is the
A) Log phase
B) Death phase
C) Lag phase
D) Stationary phase
E) Prophase
C) Lag phase
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A botanist examines two plants. Plant A has large colorful petals; plant B has extremely tiny white flowers. Which one is most likely animal pollinated?
A. Plant A B. Plant B Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about animal-pollinated plants? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The event called the Cambrian Explosion resulted in an abrupt increase in
A. geological activity. B. diversity of major animal groups. C. algal diversity. D. the number and size of glaciers. E. the amount of fish, of a single species, in the seas.
Cell shapes are largely determined by:
A. cytoskeletal protein networks in the cytoplasm. B. adhesion proteins that assemble at cell surfaces. C. a mesh of proteins and polysaccharides in the extracellular matrix. D. cytosolic proteins that assemble into structures called cellular junctions. E. All of these choices are correct.
Erection occurs when
A. the spongy erectile tissue of the penis becomes engorged with blood. B. the veins flowing out of the penis vasoconstrict. C. the arteries of the penis vasodilate. D. nitric oxide is released. E. All of these events occur to promote an erection.