Prominent spines are found on __________ of the phylum Echinodermata
a. Ophiuroidea
b. Echinoidea
c. Asteroidea
d. Concentricycloidea
e. Holothuroidea
B
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Which of the following tissue types is used as the body's reserve of energy?
a. Loose connective b. Blood c. Cartilage d. Dense irregular e. Adipose
Experiments with bacteria and __________ offered
solid evidence that deoxyribonucleic acid (DNA), not protein, is hereditary material. Fill in the blank(s) with the appropriate word(s).
Intestinal gas is evidence of active ________ in some animals' digestive tracts
A) thermophiles B) methanogens C) yeast cultures D) halophiles
One major difference between bacterial and eukaryotic RNA polymerase is that
a. prokaryotes have several RNA polymerases. b. eukaryotic RNA polymerase can polymerize RNA in the 3? to 5? direction. c. prokaryotic RNA polymerase recognizes several different promoters. d. eukaryotic RNA polymerase has only one polypeptide. e. eukaryotic RNA polymerase cannot read DNA to find the promoter sequence.