Uneven curvature of the corneas causes
a. cataracts.
b. myopia.
c. hyperopia.
d. trachoma.
e. astigmatism.
E
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Deposits of shells from ancient _____ are mined as chalk and limestone
a. dinoflagellates c. radiolarians b. diatoms d. foraminiferans
Which characteristic distinguishes humans from other primates?
a. complexity of the brain b. walking upright c. using tools d. body hair e. manual dexterity
Eukaryotes have ________ type(s) of RNA polymerase.
A. two B. three C. one D. 64 E. four
In order to produce human insulin in bacteria what must be done first?
A. Bacteria containing the human insulin gene are grown. B. Human insulin protein is purified from the bacteria. C. The bacterial insulin gene must be cloned. D. The human insulin gene must be transformed into bacteria. E. The coding sequence of the genes which produce human insulin must be isolated.