What molecule is composed only of chains and rings of hydrogen and carbon?

A) carbohydrate
B) hydrocarbon
C) polypeptide
D) polysaccharide


B

Biology & Microbiology

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A binomial is always a

(a) genus. (b) specific epithet. (c) scientific name. (d) two-part name.

Biology & Microbiology

Which factor is important for maintaining the different germ cell layers in the developing embryo? [Hint: without this molecule the embryo would be a ball of cells with no distinct germ cell layers.]

A. activin B. noggin C. Spemann's organizer D. Hox gene E. cadherins

Biology & Microbiology

Compare and contrast simple diffusion, osmosis, and facilitated diffusion. What will be an ideal response?

Biology & Microbiology

Some people breathe primarily through their mouth rather than their nose. Why is this practice a bad idea?

What will be an ideal response?

Biology & Microbiology