Several different classes make up a

a. kingdom
b. phylum
c. family
d. genus


Ans: b. phylum

Biology & Microbiology

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New species evolve from preexisting species by the accumulation of ______.

A. metabolic events B. genetic mutations C. proteomes D. reproductive events E. developmental events

Biology & Microbiology

Which of the following statements about plant toxins against herbivores is false?  

A.  The toxin may be kept in a membrane-bound structure to keep it from harming the plant. B.  The toxin may not be toxic unless it is metabolized in the intestine of a herbivore. C.  The toxin may have also have a bad taste. D.  Even a little bit of the toxin will be deadly. E.  Some toxins can over stimulate particular physiological processes.

Biology & Microbiology

What type of test would you use to determine the relative order of more than two genes?

What will be an ideal response?

Biology & Microbiology

Which word is defined by this statement: A measure of this disorder, or randomness?

a. energy b. entropy c. enthalpy d. mass e. catabolism

Biology & Microbiology