Gliding motility can be used to propel bacteria ________.
A. through liquids only
B. along the framework of the cytoskeleton of host cells
C. across solid substrates only
D. through the air only
Answer: C
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Bioaccumulation occurs when an animal ingests
a. an animal who has eaten toxic materials. b. a plant that has absorbed toxins. c. toxins directly from the environment. d. all of these
If the temperature of the skin is too low or too high, this information is conveyed to an area of the brain called the
A. cerebellum. B. hypothalamus. C. cerebrum. D. medulla oblongata. E. spinal cord.
What would result if an error inside gastrulation caused too few cells inside the archenteron?
A. Too little endoderm, resulting in missing gut and organs B. Too little ectoderm, resulting in missing nervous system or skin C. Problems in muscle development D. Too little protoderm, resulting in missing organs 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 the fate of the archenteron? 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 bright coloration of male birds is often the result of what?
(A) gene flow. (B) genetic drift. (C) sexual selection. (D) stabilizing selection. (E) coevolution.