Whenever a species of an organism has been introduced into an area that contains a variety of unfilled niches, a variety of ecological opportunities are available and the descendants of this species evolve in a variety of ways. These variations permit the organisms to take advantage of these ecological opportunities. This illustrates
A. the inheritance of characteristics that the individual developed as a response to the forces of the environment.
B. convergence.
C. polyploidy.
D. adaptive radiation.
D. adaptive radiation.
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Aerobic respiration, anaerobic glycolysis, and hydrolysis of phosphocreatine can all be used by vertebrate muscle cells to generate ATP during active periods. In what order are these mechanisms employed?
A. hydrolysis of phosphocreatine, anaerobic glycolysis, aerobic respiration B. hydrolysis of phosphocreatine, aerobic respiration, anaerobic glycolysis C. anaerobic glycolysis, aerobic respiration, hydrolysis of phosphocreatine D. anaerobic glycolysis, hydrolysis of phosphocreatine, aerobic respiration E. aerobic respiration, anaerobic glycolysis, hydrolysis of phosphocreatine
During fermentation, the immediate fate of the electrons in NADH is that they:a
are transferred to the electron transport chain. b. are transferred to an organic molecule. c. are transferred to O2. d. are used to make CO2. e. are used to form H2O
How many chromosomes are there in a maize (corn) embryo cell nucleus as compared to a maize (corn) endosperm cell nucleus?
A) half as many B) two-thirds as many C) the same number D) twice as many
What trait distinguishes semiperishable foods such as potatoes and nuts from perishable foods such as meats?
a. carbohydrate/sugar content b. natural microbial flora content c. salt content d. water activity/moisture content