Which of the following is an INCORRECT pairing?
A. viruses, acellular
B. prokaryotes, no nuclei
C. protozoa, multicellular
D. fungi, cell wall
Ans: C. protozoa, multicellular
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Which mineral important for nerve cell
function and muscle contraction is stored in bone?
a. calcium b. phosphorous c. potassium d. sodium e. magnesium
Ecdysone, or chemicals that mimic ecdysone, are sometimes used as ____
a. insecticides b. fungicides c. herbicides d. fungicides and nematocides e. fertilizers
An isotope shows which of the following?
A. A change in atomic number B. Inability to form compounds C. A change in mass number D. More electrons
Davis, Weintraub, and Lasser found three genes that are involved in muscle differentiation by
A. mutating genes expressed only in muscle cells to see if differentiation could be prevented. B. cloning all the genes that were expressed only in muscle cell lines to determine if any of these genes could cause non-muscle cells to differentiate into muscle cells. C. eliminating all the gene candidates that were expressed in both muscle and nonmuscle cells. D. finding all the genes that were expressed in common between two different muscle cell lines.