Select the correct association.
A. proteins-have three forms: monosaccharides, disaccharides, and polysaccharides
B. carbohydrates-provide the body with an immediate source of energy
C. carbohydrates-composed of amino acids bound together with peptide bonds
D. lipids-structural components of hair, fingernails, and claws
E. proteins-make up the bulk of the plasma membrane of cells
Answer: B
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The main phenomenon that increases the efficiency of gas exchange in fish gills is the
A. countercurrent exchange mechanism. B. co-current exchange mechanism. C. high degree of oxygen saturation of water. D. back-and-forth movement of water that maximizes oxygen uptake. E. very high blood pressure found in the circulatory system of fishes.
The autoclave treatment may be monitored by
A. heat-sensitive tape. B. heat-resistant endospores of Geobacillus stearothermophilus. C. pressure indicators alone. D. waiting for contaminants to appear on freshly poured media. E. heat-sensitive tape AND heat-resistant endospores ofGeobacillus stearothermophilus.
The beaks of birds are well suited to the type of food they eat. This result arises from
What will be an ideal response?
Fraternal twins (dizygotic) result from the fertilization of
a)two eggs and two sperm. b)two eggs and one sperm. c)one egg and two sperm. d)one egg and one sperm. e)two eggs and one sperm OR one egg and two sperm.