What oxidizing agent is used to temporarily store high energy electrons harvested from glucose molecules in a series of gradual steps in the cytoplasm?
A. FADH2
B. ADP
C. NAD+
D. Oxygen
C. NAD+
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Suppose a DNA replication error is not corrected. After two cell divisions, how many of the four daughter cells
contain this mutation (assuming that the mistake was never corrected)?
a. noneb. one c. two d. three e. four
How does the TATA box facilitate eukaryotic transcription?
a. The TATA box joins amino acids to the polypeptide chain. b. It provides an anchor point for basal transcription factors. c. It helps to unwind the DNA template before transcription. d. The TATA box signals the end of a protein gene sequence.
What form of stimulus will cause the skeletal
muscles to contract and produce shivering?
a. decrease in temperature b. increase in temperature c. electrical stimulus d. mechanical stimulus e. more than one of these
Some insects can stride on the surface of water because water
a. has a high specific heat. b. has lower density when frozen. c. is a good solvent. d. has surface tension. e. resists temperature changes.