Which of the following is the smallest unit in terms of size?
A. quadriceps
B. myofibril
C. muscle fiber
D. sarcomere
E. myofilaments
E. myofilaments
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Which of the following is NOT a membrane-disrupting toxin?
A) A-B toxin B) hemolysin C) leukocidin D) streptolysin O E) streptolysin S
Nitrogen mineralization is dependent on the ratio of nitrogen to carbon in the soil. Therefore, if you want to control the levels of nitrogen mineralization, it would be helpful to control soil levels of
A. organic matter. B. ATP. C. phosphatase. D. nitrogenase.
An alternate leaf arrangement is one in which there is one leaf per node
____________________ Indicate whether the statement is true or false.
Animals with eight rows of comb plates are called:
a. jellyfish. b. seastars. c. ctenophores. d. polycheates. e. octocorals.