Stretch-sensitive muscle spindles are indicated by the letter _____
a. A
b. B
c. C
d. D
e. C and D
ANSWER: d
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In eukaryotic cells, glycolysis occurs in:
A. the cytoplasm. B. the nucleus. C. the matrix of the mitochondria. D. the endoplasmic reticulum. E. vacuoles.
Some protists consist of a single cell with multiple nuclei. This condition is known as:
a. alternation of generations. b. multicellular. c. coenocytic. d. mycelium. e. colonial
Between 7 and 8 am, the lizard was likely exposed to solar radiation.
a. true b. false
Which of the following steps has not yet been accomplished by scientists studying the origin of life?
a. Synthesis of small RNA polymers by ribozymes b. Abiotic synthesis of polypeptides c. Formation of molecular aggregates with selectively permeable membranes d. Formation of protocells that use DNA to direct the polymerization of amino acids e. Abiotic synthesis of organic molecules