Why is starch easily digestible by most animals but cellulose is not?
What will be an ideal response?
Alpha- and beta-rings of monosaccharides give the polysaccharides assembled from them very
different chemical properties. Starch is a biologically reactive polysaccharide assembled from alphaglucose
units. Cellulose is relatively unreactive and assembled from beta-glucose units.
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Utilizing more motor units for stronger muscle contractions is called
A. fast-twitching. B. fatigue. C. aerobic capacity. D. recruitment. E. insertion.
How do microtubules separate chromosomes during anaphase?
a. Microtubules pull chromosomes to opposite poles of the cell. b. Microtubules push chromosomes to opposite poles of the cell. c. Microtubules push and pull chromosomes to separate poles of the cell. d. Microtubules attach to telomeres and pull chromosomes to opposite poles of the cell. e. Microtubules attach to telomeres and push chromosomes to opposite poles of the cell.
Explain the significance of apomixis in propagation of plants. Cite two examples of commercial
significance. What will be an ideal response?
You recently identified a novel protein that contains several membrane-spanning domains. You would predict that the amino acids embedded in the membrane would have ________ side groups.
A. polar uncharged B. positively charged C. nonpolar D. negatively charged