All of the following are functions of proteins embedded in the plasma membrane EXCEPT ____

a. transport of substances in and out of the cell
b. generation of ATP
c. recognition of signal molecules
d. adherence to molecules on the surface of other cells
e. recognition of "like" cells


B

Biology & Microbiology

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Signals are sent from one neuron to another at a synapse, where vesicles release molecules of ________ that travel to the postsynaptic cell

a. sodium ions b. calcium ions c. neurotransmitter d. potassium ions

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Which one of the following structures seen here is present in both the plant and the animal cell?

1.golgi body 2.cell wall 3.chloroplasts 4.central vacuole

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Which component of the PCR mix do researchers manipulate to induce a site-specific mutation? 

A. Reverse transcriptase B. Primers C. DNA template D. Taq polymerase

Biology & Microbiology