The primary purpose of homeostasis is to:
a. accept responses to stimuli
b. provide unlimited growth within an organism
c. allow unrestricted movement of an organism
d. convert an organism to live in a harmful environment
e. maintain a constant internal environment
e
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Virulence is the relative ability of a ________ to cause disease
A) pathogen B) commensal C) virus D) bacterium
Which of the following is (are) used by microorganisms to become resistant to a particular drug?
A. An alternate metabolic pathway that bypasses the drug-sensitive step B. Exclusion of the drug from the cell C. Enzymatic inactivation of the drug D. All of the choices are correct.
Most flowers are pollinated by which method?
a. wind b. birds c. bats d. water e. insects
In fruit flies, long wing (L) is dominant, vestigial wing (l) is recessive, gray body (G) is dominant, ebony body (g) is recessive. Two fruit flies were mated that were long-winged with gray bodies. The genotype of these two parental flies is LlGg ´ LlGg. What proportion of the offspring flies would have long wings and gray bodies?
A. All offspring would be long-winged with gray bodies. B. Nine-sixteenths of the offspring would be long-winged with gray bodies. C. Three-fourths of the offspring would be long-winged with gray bodies. D. Seven-sixteenths of the offspring would be long-winged with gray bodies.