The protein coat surrounding the viral genome is called the
A. matrix.
B. capsid.
C. envelope.
D. capsule.
Answer: B
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An animal with bilateral symmetry
a. has left and right sides. b. usually displays cephalization. c. produces mirror images regardless of the number of "cuts" through the central axis. d. has left and right sides and usually displays cephalization. e. has left and right sides, usually displays cephalization, and produces mirror images regardless of the number of "cuts" through the central axis.
Which of the following statements incorrectly describes common structural features of an animal secretory cell and a photosynthetic plant cell?
a. Both cells have Golgi apparatus. d. Both cells have a plasma membrane. b. Both cells have mitochondria. e. Both cells have a nucleus. c. Both cells have chloroplasts.
The teacher was unaware of the difference between suspension feeding and predation. The teacher thought that providing live copepods (2 mm long) and feeder fish (2 cm long) would satisfy the dietary needs of all of the organisms
Consequently, which two organisms would have been among the first to starve to death (assuming they lack photosynthetic endosymbionts)? A) sponges and corals B) sea stars and sponges C) shrimp and bivalves D) bivalves and sponges
Ribosomes are the structures in the cell that produce
A. lipids. B. glucose. C. proteins. D. steroids. E. starches.