Tertiary and quaternary structure of proteins involves ________ bonds
A) hydrogen
B) ionic
C) polar covalent
D) nonpolar covalent
E) ionic, hydrogen, polar, and nonpolar covalent
E
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What help move lymph throughout the lymph vessels?
a. constriction of blood vessels b. skeletal muscle and breathing movements c. conscious actions d. dilation of blood vessels
DDT is an insecticide that kills a large spectrum of insects and causes the breakdown of reproductive fitness in birds. DDT accumulates in the food chain. Which of the four feeding guilds of birds has the highest proba-bility of extinction?
a. low in food chain and insectivore c. frugivore b. high in food chain and insectivore d. nectarivore
If a population doubles in size, a deleterious allele should become less likely to drift to a higher frequency.
a. true b. false
Explain what is meant by deamination. How does this mutation affect a cytosine (C) versus a methylcytosine (5meC)? What effect does deamination have on CpG islands, and how does that affect the mutation frequencies in these regions?
What will be an ideal response?