Which is a form of energy that is generally unavailable to do any work?
A. Kinetic energy
B. Sound energy
C. Radiant energy
D. Mechanical energy
E. Heat
Answer: E
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Hemoglobin's affinity for oxygen when the BPG level is high is
A) greater than hemoglobin's affinity for oxygen when the BPG level is low. B) less than hemoglobin's affinity for oxygen when the BPG level is low. C) equal to hemoglobin's affinity for oxygen when the BPG level is low. D) equal to hemoglobin's affinity for oxygen when pH is low. E) equal to hemoglobin's affinity for oxygen when pH is high.
MHC class I molecules are
A. glycolipid synthesized on the smooth endoplasmic reticulum. B. glycoproteins synthesized on the rough endoplasmic reticulum. C. small peptides synthesized on free ribosomes. D. phospholipids synthesized in secretory vesicles.
Which of the following characteristics makes hemoglobin's structure such a good match for its function as an oxygen carrier?
A) Each hemoglobin molecule can bind two oxygen molecules. B) Each hemoglobin molecule can bind four oxygen molecules. C) Each hemoglobin binds irreversibly to an oxygen molecule. D) Each hemoglobin molecule can bind one oxygen molecule. E) Each hemoglobin molecule can't be saturated by oxygen molecules.
The neurilemma of axons in the peripheral nervous system is the outer layer of
A) astrocytes. B) Schwann cells. C) oligodendrocytes. D) microglia. E) ependymal cells.