18 Questions
Which of the following is NOT a function of glucagon regarding carbohydrate metabolism?
Promoting glycogenesis
Lactate is produced in actively contracting muscles due to:
Low oxygen availability and high ATP demand
The Cori cycle involves:
Conversion of glucose to lactate in the muscle and reconversion of lactate to glucose in the liver
Which of the following is NOT a function of insulin regarding carbohydrate metabolism?
Inhibiting gluconeogenesis
Diabetes mellitus is characterized by derangements in the metabolism of:
Carbohydrates, fats, and proteins
Which cells in the pancreas secrete glucagon?
Alpha cells
Which of the following statements about glycolysis is incorrect?
It occurs only in the presence of oxygen to enable aerobic cellular respiration.
In the energy investment phase of glycolysis, which of the following occurs?
Glucose (6-C) breaks down into two molecules of pyruvate (3-C), and two ATP molecules are used up.
What is the committed step of glycolysis?
The conversion of fructose-6-phosphate to fructose-1,6-bisphosphate.
Which of the following is not a non-carbohydrate precursor for gluconeogenesis?
Fructose
In which process is lactate formed from pyruvate?
Homolactic fermentation
What is the primary function of gluconeogenesis?
To supply the needs for plasma glucose between meals.
What is the most common type of diabetes mellitus?
Type 2 diabetes
What is the target range for normal blood glucose levels?
65-100 mg/dL
Which of the following is a key feature of type 2 diabetes?
Insulin resistance
What is the diagnostic criteria for diabetes mellitus based on the oral glucose tolerance test (OGTT)?
Fasting > 126 mg/dL and 2hr > 198 mg/dL
What is the purpose of the HbA1c (glycated hemoglobin) test in diabetes management?
To measure the average blood sugar level over the past 2-3 months
Which of the following processes involves the synthesis of glucose from non-carbohydrate precursors?
Gluconeogenesis
Test your knowledge on the central metabolic pathway used by all cells for the oxidation of glucose to generate energy in the form of ATP. Learn about the ten-step process that occurs in the presence of specific enzymes in the liver cell cytosol.
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