Viruses that attack prokaryotes are called

A) bacteriophages.
B) prions.
C) human pathogens.
D) viroids.
E) host cells.


A

Biology & Microbiology

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Viruses are very effectively treated with antibiotics

Indicate whether this statement is true or false.

Biology & Microbiology

Scientists have found that ancient fossils

a. are very similar to present-day organisms. b. are more similar to present-day organisms than more recent fossils. c. are just as similar to present-day organisms as more recent fossils. d. are less similar to present-day organisms than more recent fossils. e. bear no resemblance to present-day organisms.

Biology & Microbiology

DNA replication is always

A) discontinuous. B) bidirectional. C) conservative. D) semiconservative. E) dispersive.

Biology & Microbiology

An unknown chemical is analyzed and found to contain the bases thymine and guanine. This chemical is most likely

A. mRNA. B. tRNA. C. DNA. D. rRNA.

Biology & Microbiology