All organic molecules contain carbon and hydrogen. What parts of an organic molecule may contain oxygen, nitrogen, or phosphorus?
A. the nonpolar parts of an organic molecule
B. the hydrophobic parts of an organic molecule
C. the molecule's skeleton
D. functional groups
D. functional groups
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A skin cell in G2 of interphase has _______________ as much DNA as it had in G1
A. half B. twice C. the same amount D. one-fourth E. four times
When I say a flower is "purple," what have I described?
A) Its phenotype B) Its haplotype C) Its karyotype D) Its genotype
Generalized defense responses in organs distant from the infection site are called _____
A) hyperactive responses B) systemic acquired resistance C) pleiotropy D) hyperplasia
Which of the following forms of homeostasis would not be affected by a severe burn involving both the epidermis and dermis?
A) control of water loss by the integumentary system B) protection from microbes by the integumentary system C) defense against microbes by the immune system D) sensation of external temperature