What substance would you expect to accumulate in soil as a result of increased acid precipitation?
A. Nitrogen
B. Ammonia
C. Calcium
D. Oxygen
Answer: B
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Why would researchers want to have both genomic libraries and cDNA libraries from a particular
organism?
a. The genomic library is generally too big to be helpful; a cDNA library, being smaller, is much easier to study. b. A cDNA library will be the same in every cell; the genomic library tells researchers which genes are being expressed in individual cell types. c. The cDNA library helps us understand how retroviruses work; the genomic library does not. d. The cDNA library is a lot easier to clone than a genomic library. e. A genomic library will be the same in every cell; the cDNA library tells researchers which genes are being expressed in individual cell types.
The gonads are another name for
a. the parathyroid and thyroid. b. the ovary and testis. c. the adrenal cortex and medulla. d. the anterior and posterior pituitary. e. none of these
Which structure adjusts to control the intensity of incoming light?
a. cornea b. sclera c. iris d. ciliary body e. fovea
Pit vipers and boas locate their prey using:a
electroreceptors. b. thermoreceptors. c. specialized olfactory receptors. d. ampullae of Lorenzini. e. lateral line organ