Beneficial bacteria that synthesize vitamin K and some of the B vitamins are an important part of our digestion. The part of the digestive system where these bacteria are found is the ________

Fill in the blank(s) with correct word


colon

Biology & Microbiology

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Which of the following must bring in a virion-associated RNA-dependent RNA polymerase when it infects host cells?

A. +dsRNA viruses B. ?ssRNA viruses C. +ssRNA viruses D. All of the choices are correct.

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Some tRNAs have the ability to pair with different codons due to imprecise base pairing with the third base in the codon. How is this ability described?

a. by degeneracy b. by exon shuffling c. by the wobble hypothesis d. by alternative splicing

Biology & Microbiology

Which of the following binds to codons?

A) DNA B) Transfer RNA C) Messenger RNA D) RNA polymerase

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Which of the following types of cells does HIV preferentially infect?

A) cytotoxic T cells B) natural killer cells C) helper T cells D) memory cells

Biology & Microbiology