Why is Smallpox is a notable exception to the general replication scheme of DNA viruses?
a. It is a single-stranded DNA virus.
b. It is a retrovirus
c. It has prepackaged virally encoded enzymes and replicates in the cytoplasm
d. It replicates only in the nucleus.
e. None of the answers are correct
Ans: c. It has prepackaged virally encoded enzymes and replicates in the cytoplasm
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In sponges, the choanocytes or collar cells
a. are found scattered throughout the sponge body. b. act in obtaining food for the sponge. c. allow exit of water from the sponge. d. produce spicules made of silica or calcium carbonate. e. give rise to gametes.
Which of the following carries amino acids to ribosomes?
a. mRNA b. tRNA c. hnRNA d. rRNA e. all of these
Which of these are symbioses?
What will be an ideal response?
When examining the following figure, you will notice that the RNA extends from the _________ strand
Fill in the blank with the appropriate word.