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

Characteristics of Life

Biochemistry

1. Introduction to Biochemistry

Characteristics of Life

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Multiple Choice

Which four elements make up the majority of the human body's mass?

Carbon, Hydrogen, Oxygen, Nitrogen

Sodium, Chlorine, Magnesium, Iron

Hydrogen, Helium, Carbon, Oxygen

Calcium, Phosphorus, Potassium, Sulfur

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Verified step by step guidance

Step 1: Begin by understanding that the human body is primarily composed of elements that are essential for biological molecules and processes. These elements contribute to the structure and function of macromolecules like proteins, lipids, carbohydrates, and nucleic acids.

Step 2: Recall that the majority of the human body's mass is made up of four key elements: Carbon (C), Hydrogen (H), Oxygen (O), and Nitrogen (N). These elements are fundamental to organic chemistry and biochemistry.

Step 3: Carbon is the backbone of organic molecules, forming chains and rings that serve as the framework for biomolecules. Hydrogen is involved in forming bonds and maintaining the structure of water and organic compounds. Oxygen is crucial for cellular respiration and water composition. Nitrogen is a key component of amino acids and nucleotides.

Step 4: Compare the given options to identify the correct set of elements. The correct answer should include Carbon, Hydrogen, Oxygen, and Nitrogen, as these are the primary contributors to the human body's mass.

Step 5: Eliminate the other options by recognizing that elements like Sodium, Chlorine, Magnesium, Iron, Helium, Calcium, Phosphorus, Potassium, and Sulfur are present in smaller quantities or serve specific roles but do not make up the majority of the body's mass.