Most of the carbon in amino acid biosynthesis comes from
A) citric acid cycle intermediates.
B) citric acid cycle intermediates and glycolysis products.
C) glycolysis products.
D) glycolysis intermediates and products.
Answer: B
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Fruits develop from _____
A) microsporangia B) receptacles C) fertilized eggs D) ovaries E) ovules
Each year, plants and algae remove approximately _______ of the CO2 in the atmosphere.
A. half B. all C. 1/7th D. 1/5th E. 1/50th
Polysaccharides on bacterial cells stimulate the production of antibodies by binding to
A) B cells that stimulate plasma and memory cell proliferation. B) helper T cells that directly stimulate plasma and memory cell proliferation. C) helper T cells that release interleukin-1 to stimulate plasma cell proliferation. D) B cells that release interleukin-2 to stimulate plasma cell proliferation. E) B cells that stimulate plasma cell proliferation.
__________ are important and common unicellular exocrine glands.
Fill in the blank(s) with correct word