Clear evidence of bipedalism in human ancestors is demonstrated by "Lucy," an individual who lived about ____
million years ago.
a. two
b. four
c. six
d. eight
e. ten
ANSWER: b
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Which of the following imaging techniques detects differences in blood flow to particular regions through detection of differences in the relative proportions of oxygenated and deoxygenated hemoglobin?
A. X-ray B. CT scan C. MRI scan D. fMRI scan E. sonogram
The photic zone is part of what broader zone?
a. Epibenthic zone b. Vertical zone c. Aphotic zone d. Epipelagic zone
Of the following statements, which does not correlate a type of RNA with its function?
A. Ribosomal RNA is part of the ribosome. B. Transfer RNA functions to carry amino acids to the ribosome. C. Ribosomal RNA functions as a catalyst to bind amino acids into proteins. D. Messenger RNA carries the code used to make a protein. E. Complementary RNA reorders the amino acids to insure their correct sequence.
The process involving changes in one or more heritable characteristics across many generations is called
A. inbreeding. B. population genetics. C. evolution. D. inheritance of acquired characteristics.