The secondary structure of proteins may take the
form of
a. twists.
b. bends.
c. loops.
d. folds.
e. all of these.
Answer: e
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Enantiomers are a pair of stereoisomers that are mirror images of each other. Which of the following would also be true of this pair of structures?
A. They will have different melting points. B. They will have different densities. C. They will have superimposable structures. D. They will have the same molecular weight. E. If basic molecules, they will have the same pKa.
The removal of dissolved materials from soil by percolating water is called illuviation
____________________ Indicate whether the statement is true or false.
A product of glycolysis is ________
A) lactic acid B) ethyl alcohol C) O2 D) pyruvic acid
Specifically, molecules of chlorophyll are located in the membranes of sacs called
A) vesicles. B) stoma. C) thylakoids. D) grana. E) stroma.