Aerobic respiration involves the transfer of many electrons from glucose to electron carriers such as NAD+ over a series of multiple steps. Ultimately though, it is the reaction of glucose with oxygen to generate carbon dioxide, water and energy. Why doesn't glucose react directly with oxygen in cells?
A. Oxygen cannot accept electrons, and thus an electron carrier like NAD+ is needed.
B. Oxygen and glucose are localized in different subcellular compartments.
C. The direct reaction of oxygen with glucose would be extremely destructive to cells.
D. The reaction of oxygen with glucose is not spontaneous.
A. Oxygen cannot accept electrons, and thus an electron carrier like NAD+ is needed.
You might also like to view...
The Order Primates had its origin in:
A. small arboreal monotremes B. bipedal marsupials C. small, arboreal, insect-eating mammals D. bipedal ornithischian dinosaurs E. theropods with hair
Scientists suspect that the first macromolecules to form when cells first arose were
A. enzymes. B. RNA. C. DNA. D. polysaccharides.
Because oxygen is more electronegative than hydrogen, the water molecule is
A. ionic. B. nonpolar. C. hydrophilic. D. hydrophobic. E. polar.
To analyze genetic variation in populations, one approach is to consider the frequency of alleles. When calculating an allele frequency for a diploid species, how many alleles are present for each gene?
A. 3 B. 2 C. 4 D. 1 E. It depends on whether the individual is heterozygous or homozygous.