Which of the following enzymes is responsible for RNA synthesis?
A) DNA polymerase
B) ribosome
C) reverse transcriptase
D) RNA polymerase
D
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When a bacteriophage carrying bacterial DNA infects a new bacterium,
A) the recipient is usually killed. B) the recipient keeps the transferred DNA in storage but does not replicate it. C) it transfers bacterial DNA from the donor bacterium to the recipient bacterium. D) only viral DNA is transferred to the recipient bacterium.
Winged arthropods rely solely on behavioral mechanisms for thermoregulation
Indicate whether the statement is true or false.
Bone is composed of
A) living cells that secrete a surrounding matrix. B) a hard composite of phosphate and sodium ions. C) channels containing lymphoid tissue. D) hardened cartilage.
The basic unit of living organisms, which can carry out all of the necessary functions of life is the ______
Fill in the blank(s) with the appropriate word(s).