A lichen is made up of which two types of organisms?
A. a fungus and a nonvascular plant species
B. a fungus and an algal species
C. an alga and a vascular plant species
D. an alga and a nonvascular plant species
E. a fungus and either an algal or bacterial species
E. a fungus and either an algal or bacterial species
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In the Calvin cycle, the enzyme that catalyzes the capture of carbon dioxide and the formation of 3-phosphoglycerate is
A) phosphoglycerokinase. B) ribulose bisphosphate carboxylase/oxygenase (rubisco). C) triose phosphate isomerase. D) phosphoribulokinase. E) glyceraldehyde-3-phosphate dehydrogenase.
The greatest number of ATP molecules is
produced in a. glycolysis. b. alcoholic fermentation. c. anaerobic electron transfer. d. electron transfer phosphorylation. e. the Krebs cycle.
A comparison of mitochondria and chloroplasts shows that
A. both use an increase in pH in their inner-membrane space to produce ATP. B. they have very different electron transport protein complexes. C. both generate ATP via an H+ electrochemical gradient. D. only mitochondria contain ATP synthase. E. both use oxygen as a final electron acceptor.
Male frogs give calls that attract female frogs to approach and mate. Researchers examined mating calls of closely related but separate species of tree frogs in South America. What outcomes could possibly occur where the ranges of two species overlap?
I) The species will interbreed, eventually fusing over time. II) A stable hybrid zone will form if hybrids are better adapted to the area of overlap than either parent species is. III) Species will continue to diverge and be isolated by behavioral or genetic mechanisms. A) I B) II C) III D) I, II, and III