A nucleic acid contains thymidine, allowing you to conclude that

A. this nucleic acid could be either DNA or RNA.
B. this nucleic acid is DNA.
C. this nucleic acid is RNA.


Answer: B

Biology & Microbiology

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One function of the 5' UTR (untranslated region) of mRNA is to

a. control the half-life of mRNA. b. extend the half-life of mRNA. c. decrease the half-life of mRNA. d. stabilize the mRNA structure. e. bind ribosomes for initiating translation.

Biology & Microbiology

The short appendages on some pathogenic bacteria that provides adhesion to host cells are called

What will be an ideal response?

Biology & Microbiology

As the first steps in creating recombinant DNA molecules were taking place, scientists immediately realized that

modifying the genetic information in ____________________, a bacterium from the human gut, could be potentially dangerous. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Which of the following is only partially reabsorbed in the proximal convoluted tubule?

a. glucose b. amino acids c. sodium ions

d. vitamins e. nutrients

Biology & Microbiology