An aerobic cellular process requires carbon dioxide.

a. true
b. false


Answer: b. false

Biology & Microbiology

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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; homeobox

b. segmentation; homeobox; homeodomain c. segmentation; homeodomain; homeobox d. homeobox; homeobox; homeodomain e. homeobox; homeodomain; homeobox

Biology & Microbiology

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.

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology