The advantage to the cell of the gradual oxidation of glucose during cellular respiration compared with its combustion to CO2 and H2O in a single step is that ________________
(a) more free energy is released for a given amount of glucose oxidized.
(b) no energy is lost as heat.
(c) energy can be extracted in usable amounts.
(d) more CO2 is produced for a given amount of glucose oxidized.
(c) The amount of free energy released by glucose oxidation is the same as combustion, the amount of CO2 released is the same, and some of the energy released is still lost as heat, whatever the route.
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Each chromosome contains a constricted region called a(n) ____________________ where sister chromatids attach
Fill in the blank(s) with correct word
What do you think would result if nitrogen-fixing cyanobacteria populations suddenly declined?
A. Aquatic primary production would decline, particularly in regions not subject to fertilizer runoff. B. Legumes would cease to grow, but other types of plants would be unaffected. C. Both the aquatic and terrestrial populations of autotrophs would collapse. D. Populations of denitrifying bacteria would expand to take over their role, creating only a temporary disruption. E. More nitrogen would become available for other aquatic autotrophs.
Mendel's discovery of his law of independent assortment would likely not have occurred if he had ________
a. selected any experimental organism other than garden pea plants b. selected any linked genes to study c. studied any traits that were carried on the same chromosome d. known that pea plants could self-fertilize
In 1927, the U.S. Supreme Court upheld the right of states to use ____________________ as a means of preventing
reproduction by those deemed “unfit.” Fill in the blank(s) with the appropriate word(s).