1
CNT Written Exam Version 3 | Latest Update |
Comprehensive Practice Questions & Answers | Certification
Exam Preparation PDF
CNT Written Exam Version 3 | Comprehensive Practice Questions & Answers
1. During the second stage of glucose catabolism, the six-carbon molecule is cleaved into two
three-carbon molecules of pyruvate in a process known as what?
A) Gluconeogenesis
B) Glycogenesis
C) Glycolysis
D) Lipolysis
Glycolysis is the cytosolic pathway that breaks glucose into pyruvate, yielding ATP regardless of
oxygen presence.
2. A client with a history of alcoholism is showing signs of ataxia and ophthalmoplegia, likely
due to a severe deficiency in which B vitamin crucial for carbohydrate metabolism?
A) Riboflavin
B) Niacin
,2
C) Thiamin
D) Biotin
Thiamin (B1) deficiency causes Wernicke-Korsakoff syndrome, severely impacting neurological
function and glucose utilization.
3. An obese patient with fatty liver disease should be strictly monitored for intake of which
type of lipid strongly correlated with visceral adiposity and hepatic steatosis?
A) Monounsaturated fatty acids
B) Omega-3 fatty acids
C) Saturated fatty acids
D) Medium-chain triglycerides
Excessive saturated fats are directly linked to increased visceral fat deposition and non-alcoholic
fatty liver disease progression.
4. Following a gastrectomy, a patient is at high risk for pernicious anemia due to the lack of
intrinsic factor needed for absorption of which vitamin?
A) Folate
B) Vitamin B12
C) Vitamin C
D) Vitamin D
,3
Intrinsic factor from gastric parietal cells is obligatory for ileal absorption of cobalamin; its
absence leads to B12 deficiency anemia.
5. In the small intestine, the enzyme enterokinase activates trypsinogen into trypsin, a
critical step in the digestion of which macronutrient?
A) Carbohydrates
B) Lipids
C) Proteins
D) Nucleic acids
Trypsin is a key protease that initiates protein digestion in the duodenum after activation by
enterokinase.
6. A patient experiencing cardiac arrhythmias and muscle weakness is diagnosed with
hypokalemia, defined by a serum potassium level below which value?
A) 5.0 mEq/L
B) 3.5 mEq/L
C) 4.0 mEq/L
D) 2.0 mEq/L
Hypokalemia is serum potassium <3.5 mEq/L, critically affecting muscle contraction, nerve
signaling, and cardiac rhythm.
, 4
7. Which eicosanoid synthesized from arachidonic acid via the COX-1 pathway is primarily
responsible for promoting platelet aggregation and vasoconstriction?
A) Prostacyclin
B) Thromboxane A2
C) Leukotriene B4
D) Prostaglandin E2
Thromboxane A2 is a potent vasoconstrictor and platelet aggregator, opposing prostacyclin's effects
in hemostasis.
8. What is the recommended daily protein intake in grams per kilogram of body weight for a
healthy, moderately active 70kg adult male?
A) 1.6 g/kg
B) 2.0 g/kg
C) 0.8 g/kg
D) 1.2 g/kg
The RDA for protein for healthy adults is 0.8 g/kg body weight, sufficient for maintenance and
repair without excess.
9. This mineral, when in excess, can mimic calcium and be deposited in bone, potentially
disrupting normal bone mineralization and increasing fracture risk.
A) Zinc
CNT Written Exam Version 3 | Latest Update |
Comprehensive Practice Questions & Answers | Certification
Exam Preparation PDF
CNT Written Exam Version 3 | Comprehensive Practice Questions & Answers
1. During the second stage of glucose catabolism, the six-carbon molecule is cleaved into two
three-carbon molecules of pyruvate in a process known as what?
A) Gluconeogenesis
B) Glycogenesis
C) Glycolysis
D) Lipolysis
Glycolysis is the cytosolic pathway that breaks glucose into pyruvate, yielding ATP regardless of
oxygen presence.
2. A client with a history of alcoholism is showing signs of ataxia and ophthalmoplegia, likely
due to a severe deficiency in which B vitamin crucial for carbohydrate metabolism?
A) Riboflavin
B) Niacin
,2
C) Thiamin
D) Biotin
Thiamin (B1) deficiency causes Wernicke-Korsakoff syndrome, severely impacting neurological
function and glucose utilization.
3. An obese patient with fatty liver disease should be strictly monitored for intake of which
type of lipid strongly correlated with visceral adiposity and hepatic steatosis?
A) Monounsaturated fatty acids
B) Omega-3 fatty acids
C) Saturated fatty acids
D) Medium-chain triglycerides
Excessive saturated fats are directly linked to increased visceral fat deposition and non-alcoholic
fatty liver disease progression.
4. Following a gastrectomy, a patient is at high risk for pernicious anemia due to the lack of
intrinsic factor needed for absorption of which vitamin?
A) Folate
B) Vitamin B12
C) Vitamin C
D) Vitamin D
,3
Intrinsic factor from gastric parietal cells is obligatory for ileal absorption of cobalamin; its
absence leads to B12 deficiency anemia.
5. In the small intestine, the enzyme enterokinase activates trypsinogen into trypsin, a
critical step in the digestion of which macronutrient?
A) Carbohydrates
B) Lipids
C) Proteins
D) Nucleic acids
Trypsin is a key protease that initiates protein digestion in the duodenum after activation by
enterokinase.
6. A patient experiencing cardiac arrhythmias and muscle weakness is diagnosed with
hypokalemia, defined by a serum potassium level below which value?
A) 5.0 mEq/L
B) 3.5 mEq/L
C) 4.0 mEq/L
D) 2.0 mEq/L
Hypokalemia is serum potassium <3.5 mEq/L, critically affecting muscle contraction, nerve
signaling, and cardiac rhythm.
, 4
7. Which eicosanoid synthesized from arachidonic acid via the COX-1 pathway is primarily
responsible for promoting platelet aggregation and vasoconstriction?
A) Prostacyclin
B) Thromboxane A2
C) Leukotriene B4
D) Prostaglandin E2
Thromboxane A2 is a potent vasoconstrictor and platelet aggregator, opposing prostacyclin's effects
in hemostasis.
8. What is the recommended daily protein intake in grams per kilogram of body weight for a
healthy, moderately active 70kg adult male?
A) 1.6 g/kg
B) 2.0 g/kg
C) 0.8 g/kg
D) 1.2 g/kg
The RDA for protein for healthy adults is 0.8 g/kg body weight, sufficient for maintenance and
repair without excess.
9. This mineral, when in excess, can mimic calcium and be deposited in bone, potentially
disrupting normal bone mineralization and increasing fracture risk.
A) Zinc
