The different strains of a bacterial species
A. may be the result of random mutations.
B. can participate in conjugation and transformation.
C. may be susceptible to different antibiotics.
D. reproduce asexually.
E. All of the answers are correct.
Answer: E
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Which components of blood are the smallest in size?
a. erythrocytes b. leukocytes c. platelets d. erythrocytes and platelets are the same size e. erythrocytes, leukocytes and platelets are the same size
X chromosome inactivation results in the
a. total inactivation of both X chromosomes. b. inactivation of only the paternal X chromosome. c. inactivation of only the maternal X chromosome. d. inactivation of either the paternal X chromosome or the maternal X chromosome. e. nonrandom inactivation of X chromosomes in the initial cells of tissues.
Each skeletal muscle fiber is also called a
a. muscle. b. muscle cell. c. myofibril. d. sarcomere. e. myomesium.
________ muscle is the type of muscle primarily responsible for stomach contractions.
A. cardiac B. smooth C. skeletal