Specimens are prepared for ________ microscopy using electron-dense stains
A) atomic probe
B) bright-field
C) confocal
D) transmission electron
E) scanning tunneling
D
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All of the following are common functional groups found in biological molecules except
A) phosphate groups. B) carbonyl groups. C) amino groups. D) sulfhydryl groups. E) butyl groups.
Temperate grasslands are typically nestled between the ________ and ________ biomes
a. desert, temperate forests b. desert, coniferous forest c. tundra, coniferous forests d. desert, rainforests e. temperate forests, tundra
DNA polymerase
a. is an enzyme. b. adds new sugars to a strand. c. proofreads RNA strands to see that they are correct. d. unwinds the DNA molecule during repair. e. is made of uracil.
Which flatworms are parasites of vertebrates and have a head modified into a scolex with hooks and suckers for attaching to places such as the intestinal wall of hosts?
a. Trematoda b. Cestoda c. Turbellaria d. Polychaeta