Y1S2 010 III Biochem Glycolysis: The Central Metabolic Pathway

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Questions and Answers

What is the primary function of glycolysis in cellular respiration?

  • To produce NADH for energy storage
  • To convert lactate into pyruvate
  • To generate energy in the form of ATP (correct)
  • To synthesize glucose from non-carbohydrate carbon substrates

In which cellular compartment does glycolysis occur?

  • Endoplasmic reticulum
  • Nucleus
  • Cytosol (correct)
  • Mitochondria

What is the committed step of glycolysis?

  • Step 7: Aldolase
  • Step 1: Glucose phosphorylation
  • Step 10: Pyruvate kinase
  • Step 3: Phosphofructokinase (correct)

What is the primary function of gluconeogenesis?

<p>To synthesize glucose from non-carbohydrate carbon substrates (B)</p> Signup and view all the answers

What is the byproduct of homolactic fermentation?

<p>Lactate (A)</p> Signup and view all the answers

In which organs does gluconeogenesis occur?

<p>Liver and kidneys (C)</p> Signup and view all the answers

What is the primary difference between Type 1 and Type 2 diabetes mellitus?

<p>Type 1 is unable to produce enough insulin (D)</p> Signup and view all the answers

What is the primary purpose of the HbA1c test in diagnosing diabetes mellitus?

<p>To reflect average blood sugar levels over a 2-3 month period (C)</p> Signup and view all the answers

What is the normal range for fasting blood glucose levels?

<p>65-100 mg/dL (C)</p> Signup and view all the answers

What is the primary function of Continuous Glucose Monitoring (CGM) technology?

<p>To estimate glucose levels and wirelessly send the information to a software program (C)</p> Signup and view all the answers

Which process involves the breakdown of glycogen into glucose?

<p>Glycogenolysis (C)</p> Signup and view all the answers

What is the diagnostic threshold for diabetes mellitus based on a 2-hour postprandial glucose level?

<p>198 mg/dL (C)</p> Signup and view all the answers

What is the primary purpose of the Cori cycle in the body?

<p>To prevent lactic acid accumulation in the muscles (A)</p> Signup and view all the answers

What is the effect of glucagon on glucose consuming pathways?

<p>Inhibits (A)</p> Signup and view all the answers

What is the primary function of insulin in the body?

<p>To stimulate glucose consumption in the muscles (B)</p> Signup and view all the answers

What is the result of lactic acid accumulation in the muscles?

<p>Toxicity (B)</p> Signup and view all the answers

Which of the following is NOT a function of glucagon?

<p>Stimulates glucose uptake in the muscles (D)</p> Signup and view all the answers

What is the definition of diabetes mellitus?

<p>A chronic disorder characterized by derangements in carbohydrate, fat and protein metabolism (B)</p> Signup and view all the answers

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