With age, bones
A. become brittle.
B. become more flexible.
C. increase in mass.
D. lose their blood supply.
E. increase their pliability.
Answer: A
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The carbon dioxide molecules that bind to the hemoglobin molecule are attached to the ________ units.
A. calcium B. heme C. iron D. globin E. None of these answers is correct.
The axial skeleton includes
A. the skull, hyoid bone, thoracic cage, and vertebral column. B. the radius, ulna, carpals, and phalanges. C. the femur, tibia, and fibula. D. the upper and lower limbs and pelvic and pectoral girdles.
What effect would cutting the vagus nerve branch that innervates the stomach have on gastric function?
What will be an ideal response?
A nucleotide of DNA contain three components: ________, ________, and ________
A) deoxyribose; a phosphate group; nitrogen-containing base B) ribose; three phosphate groups; nitrogen-containing base C) ribose; two phosphate groups; acid group D) ribose; a phosphate group; nitrogen-containing base