Which biome is characterized by plants whose leaves turn color and drop off in the autumn?
A. Coniferous forest
B. Tundra
C. Temperate deciduous forest
D. Tropical rain forest
E. Chaparral
Answer: C
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What kind of bond joins amino acids together to form a protein?
A. Polar bond B. Protein bond C. Peptide bond D. Hydrogen bond
Viruses that infect bacteria are
A. prions. B. not known to exist. C. composed of protein only. D. bacteriophages. E. also capable of causing disease in humans
If an aerobic organism stopped taking in oxygen, which process would stop first?
a. the splitting of glucose into two pyruvates b. the reduction of NAD+ to NADH c. the release of carbon dioxide d. electron transfer phosphorylation e. the initiation of the Krebs Cycle
Bacteria are single-celled organisms with a single chromosome found in which cell space?
A) nucleus B) nucleolus C) nucleoid D) nuclear envelope E) mitochondria