Which process fuses vesicles with the plasma membrane to move substances out of a cell?
What will be an ideal response?
exocytosis
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If within a large population no mutations occur, no migration occurs, all mating is random, and each individual has an equal chance of reproducing, which of the following will probably happen?
A) A bottleneck will occur. B) A change in allele frequency will lead to rapid evolution. C) No evolution will occur. D) Extinction will occur.
How are the spores of zygomycetes such as Rhizopus dispersed?
A. by the wind B. by insects C. by the rain D. by swimming with flagella E. by animals
Patients who have type 2 diabetes no longer express genes when exposed to insulin. How might this phenomenon be explained?
A. The insulin signal transduction pathway becomes permanently activated. B. Insulin can no longer bind to the insulin receptor because the receptor is mutated. C. The signal transduction pathways in the cells no longer exist. D. The nucleus of their cells are altered so that insulin can not bind. E. Transcription factors normally activated by insulin remain off.
One key reason why viruses are not considered living organisms is
A. viruses do not contain genetic information. B. viruses do not reproduce on their own. C. viruses are all smaller than the smallest known cells. D. viruses do not contain a nucleus. E. viruses can be frozen and still survive.