Which of the following is NOT characteristic of RNA?
a. single stranded
b. ribose sugar
c. found only in the nucleus
d. uracil base
e. does not contain thymine
ANSWER: c
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a. secretes the shell and protects the animal. b. contains the internal organs. c. functions in obtaining food. d. is involved in movement. e. is composed of calcium carbonate.
Symptoms of phenylketonuria (PKU) may be minimized or suppressed by a diet low in
a. serine. b. glycine. c. phenylalanine. d. proline. e. glutamic acid.
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harmless bacteria to harmful bacteria unless ____ enzymes are added to the extract. a. protein-digesting b. mRNA-digesting c. tRNA-digesting d. DNA-digesting e. any of these
The major divisions of the peripheral nervous
system are the a. somatic and autonomic systems. b. sympathetic and parasympathetic systems. c. peripheral and central systems. d. afferent and autonomic systems. e. cranial and skeletal nerves