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

2. Water

Properties of Water

Biochemistry

2. Water

Properties of Water

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Multiple Choice

Which property of water enables it to effectively transport ions in biological systems?

Nonpolar covalent bonding

Low specific heat

High polarity

Low surface tension

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Verified step by step guidance

Understand the question: The problem is asking which property of water allows it to transport ions effectively in biological systems. This requires knowledge of water's chemical properties and how they interact with ions.

Recall the concept of polarity: Water is a polar molecule because of the difference in electronegativity between oxygen and hydrogen atoms. Oxygen has a partial negative charge, while hydrogen has a partial positive charge, creating a dipole moment.

Explain how polarity enables ion transport: Water's high polarity allows it to interact with charged particles (ions). The partial positive charge of hydrogen atoms in water attracts negatively charged ions, while the partial negative charge of oxygen atoms attracts positively charged ions.

Discuss the role of hydration shells: When ions dissolve in water, water molecules surround them, forming hydration shells. This stabilizes the ions and keeps them in solution, enabling transport in biological systems.

Eliminate incorrect options: Nonpolar covalent bonding, low specific heat, and low surface tension do not contribute to ion transport. High polarity is the correct property that facilitates this process.