Which of the antibiotics inhibit protein synthesis in susceptible bacteria?
A) amikacin
B) tyrothricin
C) vancomycin
D) cephalexin
Ans: A) amikacin
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Select all of the following that are true about cephalopods.
_____ They may be very large and can weigh over 1000 pounds. _____ They are very intelligent and are capable of learning by observation. _____ They lack a shell. _____ They are exclusively herbivorous. _____ They have a closed circulatory system
Plants bending toward the sun early in the morning is an example of which property of life?
a. evolution and adaptation b. homeostasis c. growth and development d. response to a stimulus
Muscles exert force by
a. expanding in one direction. b. expanding in either of two directions. c. pushing in one direction only. d. pulling in one direction only. e. pushing or pulling.
Which species is considered to be the most ancient?
a. Homo erectus b. Australopithecus afarensis c. Australopithecus sediba d. Homo sapiens e. Sahelanthropus tchadensis