Calcium is a mineral that plays an important role in ____
a. producing thyroid hormone
b. nerve function
c. intercellular signaling
d. supporting the hemoglobin molecule
e. maintaining the cell membrane
ANSWER: c
Biology & Microbiology
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Pyruvate dehydrogenase is regulated by all of the following except
A) NADH. B) ATP. C) AMP. D) acetyl CoA. E) CO2.
Biology & Microbiology
The plant hormone ____ is primarily responsible for the growth of a floral stalk in rosette plants such as cabbages
a. salicylic acid b. cytokinins c. ethylene d. gibberellin e. brassinosteroid
Biology & Microbiology
The genetic information in viruses
A. is single-stranded DNA. B. is single-stranded RNA. C. can be DNA or RNA, and single- or double stranded. D. is double-stranded RNA. E. is double-stranded DNA.
Biology & Microbiology
_____ are angiosperms.
A. Fiddlehead ferns B. Sphagnum mosses C. Fir trees D. Roses
Biology & Microbiology