Which of the following is responsible for the alpha-helical structure of proteins?
a. hydrogen bonds
b. ionic interactions
c. polar covalent bonds
d. hydrophobic interactions
e. nonpolar covalent bonds
a
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Which PCR step synthesizes complimentary DNA strands?
A. Cool DNA to between 50°C and 65°C. B. Add DNA polymerase and nucleotides at 72°C. C. Repeat the cycle of heating and cooling. D. Add primers. E. Heat target DNA to 94°C.
For alleles of genes in Hardy-Weinberg equilibrium, the frequency of heterozygotes is represented as
A) p. B) q. C) p2. D) q2. E) 2pq.
Self assembly of complex molecules structures was first demonstrated studies of:
A) ribosomes B) cytoskeleton C) tobacco mosaic virus D) molecular chaperones E) hemoglobin
What characteristic would the R groups of amino acids have if they are located within the interior of biological membranes?
A. The R groups would be able to form ionic bonds. B. The R groups would be polar. C. The R groups would be hydrophilic. D. The R groups would hydrophobic.