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

3. Amino Acids

Amino Acid Groups

Biochemistry

3. Amino Acids

Amino Acid Groups

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 is true of complementary proteins?

They are proteins that can be synthesized by the human body.

They provide all essential amino acids when eaten together.

They are found exclusively in animal-based foods.

They are proteins that contain only nonpolar amino acids.

Previous problemNext problem

Verified step by step guidance

Understand the concept of complementary proteins: Complementary proteins are two or more protein sources that, when combined, provide all the essential amino acids required by the human body. Essential amino acids cannot be synthesized by the body and must be obtained through diet.

Review the role of essential amino acids: Essential amino acids are crucial for protein synthesis, enzyme function, and other biological processes. Foods that lack one or more essential amino acids are considered incomplete proteins.

Identify examples of complementary proteins: Common examples include pairing grains (e.g., rice) with legumes (e.g., beans). Grains are typically low in lysine but high in methionine, while legumes are high in lysine but low in methionine. Together, they provide a complete amino acid profile.

Eliminate incorrect options: Complementary proteins are not exclusively found in animal-based foods; they are often derived from plant-based sources. They do not consist solely of nonpolar amino acids, nor can they be synthesized by the human body.

Conclude that the correct statement is: Complementary proteins provide all essential amino acids when eaten together, making them a vital part of a balanced diet, especially for individuals consuming plant-based diets.