?
Figure 38.17
Use the figure above to answer the following question. At what partial pressure of oxygen do half the heme groups in human blood have bound oxygen?
A. 30 mm Hg
B. 100 mm Hg
C. 70 mm Hg
D. 104 mm Hg
E. 120 mm Hg
Answer: A
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Which of the following couples would NOT ordinarily be encouraged to seek genetic counseling?
A. Those who plan to raise large families. B. Those with a child who has an inherited disorder or birth defect. C. Those who are first cousins. D. Those who have had babies who died in infancy or before birth. E. Those whose occupations may pose a risk to pregnancy.
DNA is negatively charged because of its
A) deoxyribose molecules. B) ribose molecules. C) phosphate groups. D) bases. E) large molecular size.
The certainty of paternity is greatest in organisms that
A) are promiscuous. B) have extensive parental care. C) use internal fertilization. D) mate and lay eggs at the same time.
In an existing population of plants and mycorrhizae, disease strikes and the mycorrhizae are killed. Which of the following would be impacted? Check all that apply.
A. the supply of organic food to the plant B. the binding of the soil and erosion C. the water supply to the plant D. the availability of mineral nutrients to the plant