An aerobic cellular process requires carbon dioxide.
a. true
b. false
Answer: b. false
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Hox genes, one class of ____ genes, contain a conserved ____ region to which transcription factors containing a
corresponding ____ bind.
a. maternal effect; homeodomain; homeoboxb. segmentation; homeobox; homeodomain c. segmentation; homeodomain; homeobox d. homeobox; homeobox; homeodomain e. homeobox; homeodomain; homeobox
Most antibiotics act by disrupting the ribosomes in bacterial protein synthesis. Why do antibiotics not disrupt the human patient’s protein synthesis as well?
a. The DNA in bacteria is highly specialized so the drugs only work on their DNA. b. Prokaryotes and eukaryotes go through different stages except elongation. c. Prokaryotic and eukaryotic ribosomes are very different from each other. d. Antibiotics do disrupt human protein synthesis, which is why we only take very low dosages.
Which of the following is NOT a characteristic
of the arctic tundra? a. a perpetually waterlogged soil b. rapid nutrient recycling c. one of the world's greatest store of carbon d. permafrost e. cool, anaerobic conditions
Illness, stress, or anxiety override the negative feedback loop that regulates ____, thus causing its level to soar.
A. cortisol B. somatotropin C. insulin D. prolactin E. parathyroid hormone