Which factors are an example of a negative feedback system?
a. density dependent
b. density independent
c. intraspecific competition
d. interspecific competition
e. scramble competition
a
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The basic reproduction number of a pathogen
A) can vary during an epidemic based on infection control measures. B) can be determined experimentally in the lab. C) is usually high for pathogens that are transmitted through direct contact. D) can be determined experimentally and is usually high for pathogens that are transmitted through direct contact.
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
How many acres of forest are left in the world?
Many antibiotics work by blocking the function of ribosomes. Therefore, these antibiotics will:
A) prevent the movement of proteins through nuclear pores. B) block RNA synthesis. C) block DNA synthesis. D) make the two nuclear membranes fuse into one. E) block protein synthesis.