What molecule would you not expect to find in a retrovirus?

a. Uracil
b. Cytosine
c. Guanine
d. Thymine


Answer: d. Thymine

Biology & Microbiology

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The synthesis of sugar molecules through the process of photosynthesis requires energy absorbed from sunlight. Bearing this in mind, what kind of reaction is photosynthesis?  

A.  exergonic B.  endergonic C.  catabolic D.  feedback

Biology & Microbiology

When small molecules are linked together to form larger molecules, the increase in entropy typically comes from:

A. light. B. heat. C. work. D. gas. E. enzymes.

Biology & Microbiology

The cells within and on us that are not actually of us constitute the

A) human microbiome. B) parasite family. C) exome. D) cytoskeleton.

Biology & Microbiology

Nucleotides in each strand of DNA are held together by what type of bonds?

a. ionic b. phosphodiester c. peptide d. hydrogen

Biology & Microbiology