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

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 four kinds of atoms are most abundant in the human body?

Sodium (Na), Chlorine (Cl), Magnesium (Mg), and Iron (Fe)

Calcium (Ca), Phosphorus (P), Potassium (K), and Sulfur (S)

Hydrogen (H), Helium (He), Carbon (C), and Neon (Ne)

Carbon (C), Hydrogen (H), Oxygen (O), and Nitrogen (N)

Previous problemNext problem

Verified step by step guidance

Step 1: Begin by understanding the context of the question. The problem is asking about the most abundant types of atoms in the human body, which are essential for life and biochemical processes.

Step 2: Recall that the human body is primarily composed of molecules like water (H₂O), proteins, carbohydrates, lipids, and nucleic acids. These molecules are built from specific atoms that are most abundant.

Step 3: Identify the key atoms involved in these molecules. Water is composed of hydrogen (H) and oxygen (O). Proteins, carbohydrates, lipids, and nucleic acids are primarily composed of carbon (C), hydrogen (H), oxygen (O), and nitrogen (N).

Step 4: Eliminate the incorrect options by comparing them to the known composition of the human body. For example, sodium (Na), chlorine (Cl), magnesium (Mg), and iron (Fe) are present in trace amounts but are not the most abundant. Similarly, helium (He) and neon (Ne) are noble gases and do not play a significant role in the human body.

Step 5: Conclude that the correct answer is carbon (C), hydrogen (H), oxygen (O), and nitrogen (N), as these atoms are the building blocks of the major biomolecules in the human body.