When fats are used as an energy source, the glycerol portion enters ________ when it has been converted to ________
A) the citric acid cycle; pyruvate
B) glycolysis; fructose-6-phosphate
C) the citric acid cycle; acetyl CoA
D) the electron transport system; coenzyme Q
E) glycolysis; dihydroxyacetone phosphate
Answer: E
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It is believed that HIV has passed from chimps to humans more than once. This suggests that animal-to-human viral transmissions may be more common than previously thought
What is the best evidence in support of the conclusion that HIV made the chimp-to-human leap more than once? A) HIV has multiple strains, and the virus does not appear to be able to leap from humans back to chimps. B) HIV has appeared on multiple continents. C) Human-to-human transmission of HIV requires direct personal contact that simply could not have resulted in the widespread outbreak we see today. D) Several species are known to have similar viruses resulting in immunodeficiency diseases.
Evidence suggests that the crocodiles are more closely related to the birds than the turtles and snakes. If so, then including crocodiles, but not birds, in the Class Reptilia would make the Class Reptilia
A. a monophyletic group. B. a paraphyletic group. C. a polyphyletic group. D. parsimonious. E. not homologous. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about monophyly? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
A digestive system with _____ is able to carry out various tasks of digestion at once
a. bilateral symmetry b. collar cells c. a one-way tube, a mouth, and an anus d. radula e. a two way sac-like cavity
Heart muscle works hard and therefore consumes much ATP. Which organelles would you expect to be especially numerous in the heart muscle cells?
A) nuclei B) mitochondria C) Golgi complexes D) lysosomes