The type of virus indicated by the arrow labeled B is a(n)
A. plant or animal virus.
B. plant virus.
C. bacteriophage.
D. animal virus.
E. plant virus or bacteriophage.
C. bacteriophage.
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The reproductive growth stage of a biennial involves production of each of the following
EXCEPT
a. flowers. b. fruits. c. seeds. d. shoots
Active transport is different from simple diffusion in that active transport
A. requires energy. B. All of the answer choices are correct. C. moves molecules against a concentration gradient. D. requires transport proteins embedded within the cell membrane. E. moves molecules from an area of lower concentration to an area of higher concentration.
The first multicellular terrestrial organisms were
A) plants. B) amphibians. C) insects. D) fungi. E) reptiles.
Which of the following is a process in translation in which tRNA molecules deliver amino acids in the correct sequence, causing peptide bonds to form and increasing the length of the polypeptide chain?
A) elongation B) initiation C) termination D) transcription