What molecule, specifically, enters into the
Krebs Cycle?
a. acetyl CoA
b. pyruvate
c. glucose
d. carbon dioxide
e. oxygen
A
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The very first DNA sequencing technology called the Sanger method relies on
A) nanopore technology that separates DNA molecules based on charge differences. B) the incorporation of dideoxynucleotides that terminate chain extension during DNA synthesis. C) nuclear magnetic resonance (NMR) analysis. D) the release of protons whenever a new nucleotide is added to a growing strand of DNA.
Which of the following are classes of nutrients?
A) carbohydrates B) dietary cholesterol C) lipids D) proteins
You are testing a drug that might be marketed as an anti-inflammatory agent. It would be a good choice if it possessed which of the following responses?
A) stimulates the release of prostaglandins B) blocks adenylate cyclase activity C) blocks an enzyme associated with arachidonic acid production D) stimulates the activation of platelets E) all of the above
Certain chemicals like DDT undergo biological magnification because
a. reactions within prey convert similar compounds into DDT. b. many smaller prey animals consume DDT as a nutrient. c. consumers store all of the DDT present in the prey they consume. d. more DDT in the environment sticks to larger consumers. e. DDT accumulates in water supplies and larger consumers drink more water.