The rough ER is rough because of the presence of
1.proteins.
2.RNA.
3.lipids.
4.ribosomes.
4
Biology & Microbiology
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In humans, there are _______ autosomal linkage groups, plus an X and Y chromosome linkage group
A. 23 B. 46 C. 22 D. 92
Biology & Microbiology
How are the gastric glands in the stomach protected from digestion by the enzyme they produce?
What will be an ideal response?
Biology & Microbiology
_________ is a nutritive tissue composed of triploid cells in the seeds of flowering plants.
A. Phloem B. Sepal C. Microspore D. Megaspore E. Endosperm
Biology & Microbiology
Even though nitrogen constitutes 78% of Earth's atmosphere, the amount available for living things nearly all comes from
A. a few genera of detritivores. B. the breakdown of minerals. C. nitrogen-containing fertilizers. D. a few groups of nitrogen-fixing bacteria. E. the breakdown of dead plants.
Biology & Microbiology