The oxygen content of water increases linearly with an increase in oxygen partial pressure, while the oxygen content of blood increases in a sigmoidal (S-shaped) fashion. Why?
A) Carbonic anhydrase contributes to carbon dioxide release in blood, but not water.
B) The Bohr shift is stronger in water than in blood.
C) Hemoglobin shows cooperative oxygen binding.
D) Oxygen is transported equally by hemoglobin and blood plasma.
Answer: C
You might also like to view...
The ability to taste PTC and other bitter chemicals is controlled by ____
a. hormone levels that change throughout life b. the presence of fats and sugars in the food being eaten c. the amount of PTC exposure as a child d. the amount of capsaicin present in taste buds e. proteins on the surface of receptor cells
Calcium promotes sarcomere contraction by binding
to __________ thus __________. a. myosin; activating it b. actin; activating it c. tropomyosin; causing troponin to move d. troponin; causing tropomyosin to move e. myosin; changing its shape
Outline the three stages involved in the transcription of a DNA molecule. What will be an ideal response?
Which of the following reflects genetic differences?
a. phenotypic variation among organisms b. genotypic variation among organisms c. genotypic and phenotypic variation among organisms d. genotypic and phenotypic variation among populations