The major difference between a structural lipid, such as those in cell membranes, and a storage fat is
the fact that the structural lipid:a.
most commonly contains phosphate.
b. does not contain glycerol.
c. has four fatty acids attached to glucose.
d. is entirely hydrophobic.
e. is nonpolar
A
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A small population of Dutch settled in South
Africa in the 17th century and became known as Afrikaners. By chance, a few Dutch settlers carried the gene for Huntington’s disease. Today Huntington’s disease occurs at a relatively high frequency in this population. This is an example of
a. the bottleneck effect. b. the founder effect. c. gene flow. d. the Red Queen effect. e. natural selection.
In the carbon cycle, ______ from the atmosphere is used in photosynthesis to synthesize carbon-containing organic molecules in a process called ______.
A. carbon dioxide; combustion B. carbon dioxide; carbon fixation C. hydrocarbons; oxidation D. hydrocarbons; cellular respiration
Each of the following can contribute to proliferation of cancer cells except
A) anchorage-independent growth. B) inhibition of apoptosis. C) density-dependent inhibition of growth. D) tumor-suppressor inactivation. E) All can contribute to immortalization.
Choose the letter of the best match from the following:A. abscisic acidB. trichomesC. aquaporinD. endodermisE. stomaReflects sunlight at leaf surface.
Fill in the blank(s) with the appropriate word(s).