The products of the endoplasmic reticulum are transported to the Golgi apparatus by
A) cilia.
B) vesicles.
C) endocytosis
D) gated channels.
E) free-floating ribosomes.
B
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Histone variants:
A. have been identified for H2B and H4 but not for H2A and H3. B. differ in their C-terminal sequences but not in their N-terminal sequences. C. that have been identified are associated with transcriptional activation only. D. have variant patterns of modifications as a result of the structural differences in their terminal sequences. E. have been found to affect all cellular processes that involve DNA except DNA repair.
Studies of a soybean plant (Glycine max) and the bacterium Bradyrhizobium japonicum have shown
that after the bacterium enters the root, cells of the root cortex begin to divide in response to
a. a flavonoid released by soybean roots. b. nod gene products produced by soybean roots. c. nod gene products produced by the bacterium. d. nitrogen fixation by the bacterium. e. a flavonoid produced by the bacterium.
Which type of fungus has been linked to deaths of wild frogs across the globe?
1.Chytrids
2.Glomeromycetes
3.Basidiomycetes
4.yeasts
Some strains of Papillomavirus are oncogenic due to their ability to
A) lie dormant in cells for years. B) integrate into the host cell DNA. C) escape the phagosome before lysosome fusion. D) produce deoxyribonucleases. E) cause extensive damage to blood vessels.