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

1. Introduction to Biochemistry

Carbohydrates

Biochemistry

1. Introduction to Biochemistry

Carbohydrates

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

Which of the following macromolecules functions as a short-term energy source preferred by muscles?

Lipids

Nucleic acids

Carbohydrates

Proteins

Previous problemNext problem

Verified step by step guidance

Understand the role of macromolecules in energy metabolism: Carbohydrates, lipids, proteins, and nucleic acids serve different functions in the body. Carbohydrates are the primary short-term energy source, especially for muscles during physical activity.

Recall the biochemical pathway: Carbohydrates are broken down into glucose, which is metabolized through glycolysis to produce ATP, the energy currency of the cell. This process is faster compared to lipid metabolism, making carbohydrates ideal for short-term energy needs.

Compare the energy sources: Lipids provide long-term energy storage and are metabolized more slowly. Proteins are primarily used for structural and functional roles, not as a primary energy source. Nucleic acids are involved in genetic information storage and transfer, not energy metabolism.

Focus on muscle preference: Muscles rely on carbohydrates during high-intensity activities because glycolysis can rapidly generate ATP anaerobically (without oxygen), which is crucial during short bursts of activity.

Conclude the reasoning: Based on the metabolic pathways and the energy demands of muscles, carbohydrates are the preferred macromolecule for short-term energy needs.