The main product of the carbon reactions is
A. oxygen.
B. NADPH.
C. carbon dioxide.
D. a carbohydrate.
E. ATP.
D. a carbohydrate.
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Which of the following processes will occur in the presence or absence of oxygen?
A. electron transport chain B. oxidative phosphorylation C. citric acid cycle D. glycolysis E. cellular respiration
Adaptive radiation is likely to have led to which of the following?
A. The divergence of a single pea aphid population into two distinct species. B. The evolution of the horse via changes in climate and food supply. C. The long period of equilibrium in a bat species in the Mariana Islands. D. The 1,000 species of Drosophila found dispersed throughout the Hawaiian Islands.
Which animal has radial symmetry, a gastrovascular cavity, and the same opening for the entry of food and expulsion of waste?
a. a cnidarian b. a flatworm c. an annelid d. a mollusk e. a sponge
The bone marrow must continuously generate new red blood cells because the life span of a typical red blood cell is only ________
The life span is even shorter in individuals with sickle-cell trait, which accounts for the protective effects against malaria. Fill in the blank(s) with correct word