Are organisms that cannot synthesize their own food and rely on other organisms — both plants and animals — for nutrition.
a. heterotrophs
b. autotrophs
Ans: a. heterotrophs
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Intermediate filaments are
A) different in different cell types. B) smaller than actin filaments. C) composed of tubulin. D) composed of globular proteins only. E) none of the above
During labor, what type of feedback mechanism involves the release of oxytocin, which stimulates the uterus to contract, and these contractions stimulate the release of more oxytocin resulting in ever stronger contractions?
What will be an ideal response?
Alexander Fleming observed a colony of mold that inhibited the growth of nearby bacteria. What was the hypothesis proposed by Fleming to explain this result?
A) The mold produced a substance that killed nearby bacteria. B) The mold was dead. C) The mold used all of the nutrients so that the bacteria couldn't grow. D) The bacteria changed their DNA when growing near the mold.
What affect does ADH secretion have on the kidneys?
A) Water stays trapped in the kidney tubules. B) Urine output increases. C) The filtration rate increases. D) Blood pressure to the kidneys decreases. E) Water moves out of the kidney tubules.