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

Proteins

Biochemistry

1. Introduction to Biochemistry

Proteins

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Multiple Choice

Which type of molecule is primarily responsible for performing a variety of functions, such as catalysis, transport, and structural support, in the human body?

Lipids

Carbohydrates

Nucleic acids

Proteins

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Verified step by step guidance

Understand the question: The problem is asking which type of molecule is primarily responsible for performing functions like catalysis, transport, and structural support in the human body.

Recall the functions of each molecule type: Lipids are primarily involved in energy storage and membrane structure. Carbohydrates are mainly used for energy and cell signaling. Nucleic acids store and transmit genetic information. Proteins, however, are versatile molecules that perform a wide range of functions, including catalysis (enzymes), transport (e.g., hemoglobin), and structural support (e.g., collagen).

Focus on proteins: Proteins are composed of amino acids linked by peptide bonds. Their structure allows them to fold into specific shapes, enabling them to perform diverse functions. For example, enzymes catalyze biochemical reactions, transport proteins move molecules across membranes, and structural proteins provide support and strength to tissues.

Relate the functions to the question: The functions mentioned in the question—catalysis, transport, and structural support—are all key roles of proteins in the human body. This aligns with the versatility and importance of proteins in biological systems.

Conclude the reasoning: Based on the explanation above, proteins are the correct answer because they are the primary molecules responsible for these functions in the human body.