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

Proteins, starch, and DNA are similar in that they are all:

Polymers composed of repeating monomer units

Inorganic molecules essential for catalysis

Simple sugars used for immediate energy

Lipid molecules involved in membrane structure

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Verified step by step guidance

Understand the concept of polymers: Polymers are large molecules composed of repeating smaller units called monomers. Proteins, starch, and DNA are examples of biological polymers.

Identify the monomers for each polymer: Proteins are made of amino acids, starch is composed of glucose units, and DNA is made of nucleotides.

Eliminate incorrect options: 'Inorganic molecules essential for catalysis' is incorrect because proteins, starch, and DNA are organic molecules. 'Simple sugars used for immediate energy' is incorrect because starch is a carbohydrate polymer, not a simple sugar. 'Lipid molecules involved in membrane structure' is incorrect because none of these molecules are lipids.

Focus on the correct option: Proteins, starch, and DNA are all polymers composed of repeating monomer units, which is the correct answer.

Summarize the reasoning: Proteins, starch, and DNA share the characteristic of being polymers, each made up of specific monomers (amino acids, glucose, and nucleotides, respectively). This distinguishes them from other types of molecules like lipids or simple sugars.