The inter-tidal zone is a difficult environment for organisms because it has few nutrients
a. true
b. false
Answer: b. false
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The antiviral drugs currently approved for use in HIV disease include
A. protease inhibitors. B. nucleoside reverse transcriptase inhibitors. C. fusion inhibitors. D. nonnucleoside reverse transcriptase inhibitors. E. All of the choices are correct.
Examination of the amber nuggets on Hispaniola reveals:
A. similar ecological relationships observed on Hispaniola today. B. an abundance of mammal fossils. C. a shortage of insect fossils. D. that every one of the fossilized species are still found on Hispaniola today. E. that none of the insect fossils resemble existing species on Hispaniola today.
All of the following statements about cellulose are true EXCEPT:
A. Cellulose is composed of fibers of carbohydrates. B. Cellulose is an important source of plant fiber for our diet. C. Cellulose is the primary molecule found in wood. D. Cellulose is one of the most abundant organic molecules on Earth. E. Certain animals like ourselves can easily digest cellulose and use it as a source of energy.
Muscle cells in oxygen deprivation convert pyruvate to ________, and in this step gain ________.
A) lactate; ATP B) alcohol; CO2 C) alcohol; ATP D) ATP; NADH2 E) lactate; NAD+