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

3. Amino Acids

Amino Acid Groups

Biochemistry

3. Amino Acids

Amino Acid Groups

Previous problemNext problem

Struggling with Biochemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

When dietary amino acids are low, the body begins breaking down proteins from which source?

Bone matrix

Adipose tissue

Skeletal muscle tissue

Red blood cells

Previous problemNext problem

Verified step by step guidance

Step 1: Understand the context of the problem. The question is asking about the body's response to low dietary amino acids and which source of protein is broken down to compensate for this deficiency.

Step 2: Recall the role of amino acids in the body. Amino acids are the building blocks of proteins, and they are essential for various physiological functions, including enzyme activity, muscle repair, and hormone production.

Step 3: Identify the primary storage and functional sites of proteins in the body. Proteins are not stored in the body like fats or carbohydrates. Instead, they are found in functional tissues such as skeletal muscle, bone matrix, and other cellular structures.

Step 4: Evaluate the options provided. Bone matrix primarily contains collagen and is not a significant source of amino acids during dietary deficiency. Adipose tissue stores fat, not protein. Red blood cells are not a major protein reservoir. Skeletal muscle tissue, however, contains a large amount of protein and is the primary source the body breaks down during amino acid deficiency.

Step 5: Conclude that skeletal muscle tissue is the correct answer because it serves as the main reservoir of protein that can be catabolized to release amino acids for essential metabolic processes when dietary intake is insufficient.