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

Chemical Bonds

Biochemistry

1. Introduction to Biochemistry

Chemical Bonds

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 best describes the electrochemical gradient of an ion across a membrane?

It is the difference in pH across the membrane.

It is the energy required to break a covalent bond between two atoms.

It is the combined effect of the ion's concentration gradient and the electrical potential difference across the membrane.

It is the total number of ions present on both sides of the membrane.

Previous problemNext problem

Verified step by step guidance

Step 1: Begin by understanding the concept of an electrochemical gradient. It refers to the combined effect of two factors: the concentration gradient of an ion and the electrical potential difference across a membrane.

Step 2: Clarify the concentration gradient. This is the difference in the concentration of ions between two sides of the membrane, which drives ions to move from areas of high concentration to low concentration.

Step 3: Explain the electrical potential difference. This is the difference in charge across the membrane, which influences the movement of ions based on their charge (positive or negative).

Step 4: Combine the two factors. The electrochemical gradient is the result of both the concentration gradient and the electrical potential difference working together to determine the direction and magnitude of ion movement.

Step 5: Evaluate the options provided in the problem. The correct description of the electrochemical gradient is the combined effect of the ion's concentration gradient and the electrical potential difference across the membrane.