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

What is Biochemistry?

Biochemistry

1. Introduction to Biochemistry

What is Biochemistry?

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Multiple Choice

The primary source of energy in the cells is a nutrient called ________.

glucose

hemoglobin

urea

cholesterol

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Verified step by step guidance

Step 1: Understand the context of the question. The problem is asking about the primary source of energy in cells, which is a fundamental concept in biochemistry related to cellular metabolism.

Step 2: Recall that cells require energy to perform various functions, and this energy is primarily derived from a nutrient that undergoes metabolic processes such as glycolysis, the citric acid cycle, and oxidative phosphorylation.

Step 3: Review the options provided: glucose, hemoglobin, urea, and cholesterol. Analyze each option based on its biochemical role. Glucose is a carbohydrate and a key molecule in energy production. Hemoglobin is a protein responsible for oxygen transport. Urea is a waste product of nitrogen metabolism. Cholesterol is a lipid involved in membrane structure and hormone synthesis.

Step 4: Focus on glucose. Glucose is metabolized in the cytoplasm and mitochondria of cells to produce ATP (adenosine triphosphate), the universal energy currency of the cell. This process is central to cellular respiration.

Step 5: Conclude that glucose is the correct answer because it is the primary nutrient used by cells to generate energy through metabolic pathways such as glycolysis, the citric acid cycle, and oxidative phosphorylation.