Which of the following would have glycosidic bonds?
A. Monosaccharides
B. Polysaccharides
C. ATP
D. Polypeptides
E. Triglycerides
Answer: B
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The wide variation in skin color in humans is best explained by
a. environmental changes like improvements in diet. b. genetic drift. c. skin color is a polygenic trait. d. crossing over. e. artificial selection.
During the glucose activation stage of glycolysis
A) there is a net gain of two ATP molecules. B) there is a net gain of four ATP molecules. C) there is a conversion of two G3P molecules to two pyruvate molecules. D) fructose bisphosphate is split into two G3P molecules. E) two ATP molecules are used to make one fructose bisphosphate molecule.
In Drosophila, the allele red eyes (bw+) is dominant to the allele for brown eyes (bw). At another gene locus on the same chromosome, the allele for thin wing veins (hv+) is dominant to the allele for heavy wing veins (hv). Flies homozygous for bw and hv+ are crossed to flies homozygous for bw+ and hv to obtain doubly heterozygous F1 progeny.Given that these two gene loci are very closely linked, the phenotypic ratio in the F2 generation should be closest to
A. 3 red eye, thin wing veins: 1 brown eye, heavy wing veins B. 1 brown eye: 1 red eye: 1 heavy wing veins: 1 thin wing veins C. 1 brown eye, heavy wing veins: 2 red eye, thin wing veins: 1 brown eye, thin wing veins D. 1 brown eye, thin wing veins: 2 red eye, thin wing veins: 1 red eye, heavy wing veins
Gravitropism is defined as
A. growth in response to the force of gravity. B. gravity's pull on certain plant organs. C. any response to gravity that changes cell structures. D. growth in response to the Earth's magnetic field. E. growth mostly away from gravity.