An interaction between two species in which both

species benefit is
a. mutualism.
b. parasitism.
c. commensalism.
d. competition.
e. predation.


Answer: a

Biology & Microbiology

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The decline of the eugenics movement in the U.S. in the early 20th century resulted from ____

a. breakthroughs in genetic technology b. violent protests by the medical community c. the ability to manipulate gene expression d. social outrage at the number of deaths caused by botched sterilizations e. its misuse for social and political purposes by the Nazis

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The transfer of polypeptides into the ER is called ________ because the movement across the membrane is coupled with translation.

Fill in the blank(s) with the appropriate word(s).

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On which of the following infections would antibiotics most likely be effective?

1.chlamydia 2.HPV 3.syphilis 4.gonorrhea

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The water in a damaged root is seeping between cells and not moving into the vascular tissue. What part of the root has been damaged?

A. Root cap B. Casparian strip C. Pith D. Root hairs E. Primary vascular tissue

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