The molecule that carries amino acids during translation is ____
a. DNA
b. rRNA
c. mRNA
d. tRNA
e. RNA polymerase
ANSWER: d
Biology & Microbiology
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Perpetually young tissues where cells retain the
ability to divide are
a. vascular. b. meristematic. c. protective. d. photosynthetic. e. all of these
Biology & Microbiology
Electron transport molecules that only transfer electrons include
A. ubiquinone. B. FAD. C. NADP. D. ferredoxin.
Biology & Microbiology
Which of the following is true of bark?
a) It is composed of phloem plus periderm. b) It is formed by the apical meristems. c) It has no identifiable function in trees. d) It is associated with annuals but not perennials. e) It forms annual rings in deciduous trees.
Biology & Microbiology
Cardiac output is the product of heart rate times stroke volume.
a. true b. false
Biology & Microbiology