In panel "A", what is being injected into the host cell?
a. enzymes
b. the viral protein coat
c. nucleic acids
d. ribosomes
e. the viral envelope
ANSWER: c
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The number of chromosomes in diploid eukaryotic cells
A. is 46. B. changes as each organism grows and ages. C. can be predicted by the size of the organism. D. varies considerably from 2 to over 1000 in different species.
Asexual reproduction in the liverwort Marchantia is by means of
A. the detachment of gemmae. B. the fusion of antheridial and archegonial products. C. fragmentation of plant tissue. D. budding of daughter cells.
Which statement about echinoderms is FALSE?
a. They develop as deuterostomes. b. They fall within the group Bilateria. c. They show evidence of segmentation. d. The fall on the eumetazoan branch of animals. e. They fall within the group Deuterostomia.