In the presence of carbon dioxide
A. hemoglobin dissociates.
B. hemoglobin is not able to bind with bicarbonate.
C. hemoglobin changes shape, causing it to give up oxygen more readily.
D. the formation of bicarbonate causes oxygen to bind more tightly to hemoglobin.
Answer: C
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The female fetal pig is similar to the male fetal pig in that its body
(a) has separate openings for the urinary system and the reproductive system. (b) has a common opening for the urinary system and the reproductive system. (c) has an opening for the urinary system but none for the reproductive system. (d) has an opening for the reproductive system but none for the excretory system.
A mutation in an enzyme prevents it from binding substrate. This description is referring to the enzyme's:
A. phenotypic function B. cellular function C. molecular function
Explanations for mass extinction include all of the following EXCEPT
a. collisions between the earth and other bodies in the solar system. b. continental movements. c. adaptive radiation of new predator species in many lineages. d. alterations in sea level. e. habitat destruction.
Differentiation is characterized by
A. cellular division and growth. B. body parts being shaped and patterned into a specific form. C. cells becoming specialized in structure and function. D. All of the choices are correct. E. None of the choices are correct.