During mating in frogs, the male clasps the female tightly around the body with his forelimbs. What is the appropriate term for this type of behaviour?
a. marriage
b. copulation
c. amplexus
d. fertilization
Answer: c. amplexus
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The poly(A) tail of an mRNA ____
a. is where the start codon is located b. covers the stop codon until it is needed c. protects the mRNA from attack by RNA-digesting enzymes d. is where ribosomes attach at the start of translation e. is where translation terminates
Science does not involve
a. research. b. value judgments. c. theories. d. hypothetical concepts. e. controls.
The height of pea plants from a cross between parent plants heterozygous for height, in which tall is
dominant, would be: a. all short. b. all tall. c. 1 tall : 3 short. d. 2 short : 2 tall. e. 3 tall : 1 short
Which of the following choices correctly pairs a mineral with one of its major functions in the body?
A) calcium, used in amino acid metabolism B) phosphorus, maintaining water balance C) iron, component of the nucleic acid backbone D) sodium, maintaining water balance in cells