MCAT Exam Questions with Correct
Answers
Products of the Pentose Phosphate Pathway - Answer-NADPH, ribose- 5 - phosphate ,
Glycolytic intermediates
reaction of G-6-phosphate to ribulose-5- phosphate is.. - Answer-oxidation of G6P
where is the pentose phosphate pathway likely to happen - Answer-adipose tissue
Southern Blot - Answer-used to analyze extracted DNA for a potential DNA segment
Strong lewis acid - Answer-electron poor- fostered by being bonded to electron
withdrawing groups
strong lewis base - Answer-electron rich - surrounded by electron donating groups
parathyroid hormone - Answer-PTH- secreted by four small parathyroid glands located
posterior to the thyroid and functions to increase serum calcium levels
Which conditions would negatively regulate PFK activity - Answer-high citric acid levels
(krebs)
Myasthenia gravis is an autoimmune neuromuscular disorder caused by the production
of antibodies against acetylcholine receptors. Which of the following explains why
individuals who are affected with this disease experience muscle weakness? - Answer-
The antibodies bind to acetylcholine receptors and prevent endogenous acetylcholine
from binding
beta oxidation of FA - Answer-Recall that each round of beta-oxidation produces 1
acetyl-CoA, 1 NADH, 1 FADH2, decreasing the fatty acid chain length by two carbon
Which of the following statements is/are true with regard to the mechanics of skeletal
muscle contraction?
Reduced ATP levels could result in high intracellular calcium and persistent contraction
Calcium binds to calmodulin and allows actin and myosin to interact
The shorter the sarcomere length, the stronger the contraction - Answer-Only reduced
ATP levels
Why would a doctor use the bell to detect heart murmurs but the diaphragm to detect
pneumonia? - Answer-Turbulent blood flow usually creates low frequency sounds, but
crackling in the lungs is usually high frequency.
Answers
Products of the Pentose Phosphate Pathway - Answer-NADPH, ribose- 5 - phosphate ,
Glycolytic intermediates
reaction of G-6-phosphate to ribulose-5- phosphate is.. - Answer-oxidation of G6P
where is the pentose phosphate pathway likely to happen - Answer-adipose tissue
Southern Blot - Answer-used to analyze extracted DNA for a potential DNA segment
Strong lewis acid - Answer-electron poor- fostered by being bonded to electron
withdrawing groups
strong lewis base - Answer-electron rich - surrounded by electron donating groups
parathyroid hormone - Answer-PTH- secreted by four small parathyroid glands located
posterior to the thyroid and functions to increase serum calcium levels
Which conditions would negatively regulate PFK activity - Answer-high citric acid levels
(krebs)
Myasthenia gravis is an autoimmune neuromuscular disorder caused by the production
of antibodies against acetylcholine receptors. Which of the following explains why
individuals who are affected with this disease experience muscle weakness? - Answer-
The antibodies bind to acetylcholine receptors and prevent endogenous acetylcholine
from binding
beta oxidation of FA - Answer-Recall that each round of beta-oxidation produces 1
acetyl-CoA, 1 NADH, 1 FADH2, decreasing the fatty acid chain length by two carbon
Which of the following statements is/are true with regard to the mechanics of skeletal
muscle contraction?
Reduced ATP levels could result in high intracellular calcium and persistent contraction
Calcium binds to calmodulin and allows actin and myosin to interact
The shorter the sarcomere length, the stronger the contraction - Answer-Only reduced
ATP levels
Why would a doctor use the bell to detect heart murmurs but the diaphragm to detect
pneumonia? - Answer-Turbulent blood flow usually creates low frequency sounds, but
crackling in the lungs is usually high frequency.
