Which of the following will cause a shift in the hemoglobin-oxygen dissociation curve to the right?
A) increase in temperature only
B) increase in plasma pH only
C) increase in 2,3-BPG (2,3-bisphosphoglycerate) only
D) both an increase in temperature and an increase in 2,3-BPG
E) both an increase in temperature and an increase in plasma pH
Ans: D) both an increase in temperature and an increase in 2,3-BPG
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Gonorrhea is a disease that may be
A. zoonotic. B. pandemic. C. syndemic. D. asymptomatic.
Nearsightedness is dominant to normal vision and hazel eyes are dominant to blue eyes. A nearsighted woman with hazel eyes who is heterozygous for both traits marries a man with normal vision and hazel eyes. His genotype for eye color is the same as his wife's. Their three children all have blue eyes and normal vision. What is the probability that their next child will have blue eyes and be
nearsighted? A. 1/4 B. 1/2 C. 3/8 D. 1/8 E. 5/8
Why do some researchers argue for a major focus of research on microbial ecology and microbial diversity?
What will be an ideal response?
The leaf-cutter ants of Central America use leaves as food to cultivate the basidiomycete Lepiota in special underground chambers. To use leaves as an energy source, Lepiota must do which of the following?
A. secrete enzymes to digest cellulose B. ingest and break down the leaves C. secrete enzymes to digest chitin D. produce antibiotics to kill the ascomycete E. produce antibiotics to kill Streptomyces