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Biochemistry Exam 1 Practice Test
1. Which of the following is within the average range of BMI for a healthy adult?
A. 32
B. 16
C. 24
D. 18
2. On the way out the door in the morning for school you realize that you haven’t eaten breakfast and
decide to grab a bagel. In that bagel are 10 g of carbohydrates, 5 grams of fat, and 1 gram of sugar. How
many dietary calories did you just take in because of this bagel?
A. 34
B. 76
C. 84
D. 89
3. A patient presents to the hospital with edema and heart failure, upon looking over the patient’s medical
history, you find out that the patient is deficient in Thiamine. This leads you to a diagnosis of which of
the following?
A. Scurvy
B. Pellagra
C. Rickets
D. Beri Beri
4. Which ion most directly influences the release of ACh from their vesicles?
A. ClB. Na+
C. Ca2+
D. K+
E. H+
5. What is the main cause of Myasthenia Gravis?
A. Decreased release of ACh from the pre-synaptic neuron
B. Decreased activity of acetylcholinesterase
C. Increased activity of acetylcholinesterase
D. Decreased number of functional N1 acetylcholine receptors
E. Decreased number of functional N2 acetylcholine receptors
6. Inhibitory synapses most often involve which of the following channels?
A. Cl- channels
B. Na+ channels
C. Ca2+ channels
D. K+ channels
E. H+ channels
7. A person deficient in vitamin B12 might also be deficient in which of the following?
A. coenzyme
B. cofactor
C. substrate
D. alpha helix
8. The effect of temperature on the rate of the reaction is as follows:
A. As temperature increases rate increases
B. As temperature increases rate decreases
C. As temperature increases rate initially increases but then decreases
D. As temperature increases rate initially decreases and then increases
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Biochemistry Exam 1 Practice Test
9. The two amino acids that give collagen its rigid structure are:
A. Lysine and leucine
B. Proline and lysine
C. Proline and hydroxyproline
D. Glycine and arginine
10. The rigidity of hard keratins is most attributed to:
A. Hydrogen bonding
B. Disulfide bonds
C. Electrostatic interactions
D. Hydrophobic interactions
11. In competitive inhibition:
A. Vmax is increased and Km is unchanged
B. Vmax is unchanged and Km is increased
C. Vmax and Km both increase
D. Vmax and Km both decrease
12. Which of the following situations is most accurate during the fasting phase?
A. Insulin high, Glucagon low
B. Insulin high, Glucagon high
C. Insulin low, Glucagon low
D. Insulin low, Glucagon high
13. True or False: The brain has the capacity to utilize ketone bodies for its own energy.
14. Which of the following metabolic pathways is performed exclusively in the liver?
A. Ketone body formation
B. Ketone body utilization
C. Lactate production
D. TCA cycle
E. Lipogensis
15. Three ketone bodies are produced but only two are utilized for energy in tissues. Which of the
following two ketones are the energy providers?
A. Acetone and acetylacetate
B. Acetone and glycogen
C. Acetylacetate and β hydroxybutyrate
D. β hydroxybutyrate and acetone
16. A byproduct of amino acid degradation is:
A. Carbon dioxide
B. Nitrogen
C. Protein
D. Acetyl CoA
17. A 2 year old male is brought to the ER with the complaint of “funny” smelling breath. Tests reveals
increased levels of ketones upon urination. Based on this information, it can be concluded that the
patient may suffer from:
A. Myasthenia gravis
B. Chediak Higashi
C. Diabetes Mellitus
D. Anorexia nervosa
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Biochemistry Exam 1 Practice Test
Answers
1. C
2. D
3. D
4. C
5. D
6. A
7. A
8. A
9. C
10. B
11. B
12. D
13. True- but only during times of prolonged starvation
14. A
15. C
16. B
17. C
18.
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