Which form of hepatitis kills more people in the United States than AIDS?
a) Hepatitis A
b) Hepatitis B
c) Hepatitis C
d) Hepatitis E
Ans: c) Hepatitis C
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The most significant role played by pH buffers is to
A. prevent fluctuations in the acidity of solutions. B. increase the strength of acids and bases. C. prevent fluctuations in the salinity of solutions. D. limit major shifts in the amount of H+ and OH- in solution. E. keep pH low.
What type of RNA carries amino acids to the ribosome?
A. complementary RNA B. messenger RNA C. ribosomal RNA D. double-stranded RNA E. transfer RNA
Assume that a cross is made between AaBb and aabb plants and that the offspring occur in the following numbers: 106 AaBb, 48 Aabb, 52 aaBb, 94 aabb. These results are consistent with which arrangement of alleles?
What will be an ideal response?
Choose all that apply. A concentration gradient is exhibited when
A. during rest, muscle and liver cells contain high glycogen concentration and blood contains lower concentrations. B. the room temperature is 34 degree Celsius and the outside air is 34 degrees Celsius. C. the pCO2 changes from 45 to 35 mmHg in the alveoli of lungs. D. intracellular fluid has 5% solute and extracellular fluid has 0.8% solute concentration.