What type of interaction is directly responsible for the formation of secondary structure?
A) peptide bonds between adjacent amino acids
B) peptide bonds between nonadjacent amino acids
C) hydrogen bonds between sections of the polypeptide backbone
D) hydrogen bonds between side chains of amino acids
Answer: C
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Chromosomes are often represented as an X, with two sister chromatids attached at the centromere. Do chromosomes always look like an X?
A. No, chromosomes only look like an X following DNA replication, and before cell division; the rest of the time, they only have one sister chromatid each. B. No, chromosomes only look like an X right after cell division; the rest of the time, they have only one sister chromatid each. C. Yes, chromosomes are always made up of two sister chromatids attached. D. No, chromosomes only look like an X when condensed, but they always have two sister chromatids attached.
Which of the following would be an exception to the
theory of independent assortment? a. dominance b. recessiveness c. incomplete dominance d. pleiotropy e. linkage
Which of the following best explains why machines can never be 100% efficient?
a. the tendency of energy not to spread out b. the tendency of energy to spread out c. the tendency of energy to be kept d. the tendency of energy to be lost
Stage 1 glycolysis will break down glucose into what?
What will be an ideal response?