In Figure 8.3, if compound C reacts with the allosteric site of enzyme A, this would exemplify
A) a mutation.
B) repression.
C) feedback inhibition.
D) competitive inhibition.
E) transcription.
Answer: C) feedback inhibition.
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What is the partial pressure of oxygen at the start of the systemic capillary beds?
a. 40 mm Hg b. 100 mm Hg c. 70 mm Hg d. 104 mm Hg e. 130 mm Hg
About ____ percent of the 295,000 known
species of flowering plants coevolved with animal pollinators. a. 50 b. 60 c. 70 d. 80 e. 90
A functional group added to a hydrocarbon usually makes the hydrocarbon:
A) polar. B) nonpolar. C) acidic. D) an isomer. E) hydrophobic.
You cut a plasmid with a restriction enzyme that cuts it into three pieces-one fragment is 240 base pairs, one fragment is 600 base pairs, and one fragment is 1200 base pairs. You carry out electrophoresis of the digested sample. Which of the fragments will be closer to the top of the gel where the sample was inserted?
A. It depends on the charge of the DNA fragment. B. They will all be near the top because they all have sticky ends. C. The 240 base pair fragment. D. The 1200 base pair fragment. E. The 600 base pair fragment.