Malignant tumors are characterized by:
a. metastasis.
b. abnormal cell growth.
c. the formation of cell masses.
d. specific mutations.
e. proto-oncogenes.
a
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For a gene with two alternative alleles, B and b, the term q2 in the Hardy-Weinberg equation represents
A. the frequency of the B allele. B. the frequency of the bb genotype. C. the total number of individuals in the population. D. the total number of alleles for that gene in the population. E. the frequency of the Bb genotype.
Cnidarians capture their prey with the use of
(a) poison claws. (b) nematocysts. (c) oral teeth. (d) pedal disks.
Regulatory factors that bind to enzymes ____
a. always increase enzyme activity b. always decrease enzyme activity c. alter the shape of the enzyme d. alter the pH at which the enzyme works e. alter the temperature at which the enzyme works
Four of the following were likely in Earth's earliest atmosphere. Which one was not?
a. hydrogen b. nitrogen c. oxygen d. carbon dioxide e. water vapor