Table of contents

1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
8. Protein Function 9h 41m
9. Carbohydrates7h 49m
10. Lipids5h 49m
11. Biological Membranes and Transport 6h 37m
12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway3h 12m
Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism2h 26m
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

12. Biosignaling

Insulin Signaling on Glucose Metabolism

Biochemistry

12. Biosignaling

Insulin Signaling on Glucose Metabolism

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Multiple Choice

Insulin ______ the level of all nutrient molecules within the blood.

has no effect on

decreases some but not all

increases

decreases

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Verified step by step guidance

Understand the role of insulin in the body: Insulin is a peptide hormone produced by the pancreas that plays a key role in regulating blood glucose levels and nutrient metabolism.

Recall the primary function of insulin: Insulin decreases blood glucose levels by promoting the uptake of glucose into cells, particularly muscle and fat cells, and by stimulating glycogenesis (the conversion of glucose into glycogen for storage).

Consider the effect of insulin on other nutrient molecules: Insulin also influences lipid metabolism by promoting lipogenesis (fat storage) and inhibiting lipolysis (fat breakdown). However, it does not decrease all nutrient molecules; for example, it does not directly decrease amino acid levels but promotes their uptake into cells for protein synthesis.

Analyze the options provided: The correct answer should reflect insulin's ability to decrease some nutrient molecules (e.g., glucose and lipids) but not all (e.g., amino acids).

Conclude that the correct answer is 'decreases some but not all,' as insulin selectively decreases certain nutrient levels in the blood while promoting the uptake or storage of others.