In both prokaryotes and eukaryotes, the start codon (or initiator codon) is ____, which codes for the amino acid ____
a. UGA; proline
b. UUU; phenylalanine
c. AAA; lysine
d. ACG; threonine
e. AUG; methionine
ANSWER: e
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If light were prevented from reaching the right side of both retinas, which of the following would
occur?
a. The right half of the visual field would be lost. b. Only the left cerebral hemisphere would be stimulated by the light. c. No information about the light would be carried in the left optic nerve. d. The left half of the visual field would be lost. e. Sight would be lost.
Mutations of keratins in the ________ that resist tensile forces in the skin cause the blistering disease known as epidermolysis bullosa simplex
A) intermediate filaments B) microtubules C) microfilaments D) actin filaments E) crescentin filaments
according to the fluid-mosaic model of membrane structure
A. proteins make up the bulk of the membrane B. proteins float inside or within the phospholipid bilayer C. only lipids are found in the membrane D. cholesterol is the main constituent of the membrane
The oily substance that lowers the pH of the skin's surface to about pH 5 and is inhibitory to many bacteria is (sebum/sweat/serum)
What will be an ideal response?