Which one of the following has ribose sugar ?
A . ATP
B . DNA and RNA
C. DNA
D. Histones
E. tRNA
Ans: E. tRNA
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RNA acts at both the genetic and the functional levels
Indicate whether the statement is true or false.
The term coitus means ____
a. sexual arousal b. fertilization c. ejaculation d. orgasm e. sexual intercourse
A nursing baby:a
lacks cell mediated immunity. b. lacks antibody mediated immunity. c. lacks an adaptive immune response. d. receives active immunity via the breast milk. e. receives passive immunity via the breast milk.
Modern biologists still might consult the results of the Challenger expedition in order to:
A) Look at their charts of the South Pole. B) See the results of experiments in their on-board scientific laboratory. C) Consult Edward Forbes' reports on the fauna. D) Compare their deep-sea specimens with those taken by this expedition.