The -OH group in a carbohydrate
A. may be found above or below the plane of the ring.
B. is involved in the formation of stereoisomers.
C. is involved when linking monosaccharides together.
D. All of the choices are true.
D
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The arrows in the diagram below are pointing to the ____
a. esophagus and small intestine b. trachea and large intestine c. sphincters at the top and bottom of the stomach d. esophagus and pancreas e. stomach
Deuterostomes are characterized by __________ and __________ cleavage
a. radial; determinate b. radial; indeterminate c. spiral; determinate d. spiral; indeterminate e. blastopore;synapomorphy
In humans, what percent of the genome is devoted to the exons that encode proteins?
A. about 50% B. about 35% C. about 75% D. about 20% E. about 1.5%
The function of a mordant in staining procedures is to
A) fix the specimen to the slide. B) provide contrasting color. C) decrease the solubility of dye molecules. D) remove dye from certain structures. E) damage cellular structures so they take up dyes better.