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

Nucleic Acids

Biochemistry

1. Introduction to Biochemistry

Nucleic Acids

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Multiple Choice

Which electron carrier is primarily involved in the redox reactions of cellular respiration?

NAD$^+$ (Nicotinamide adenine dinucleotide)

ATP (Adenosine triphosphate)

cAMP (Cyclic adenosine monophosphate)

FADH$_2$ (Flavin adenine dinucleotide)

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Verified step by step guidance

Step 1: Understand the context of the problem. Cellular respiration is a metabolic process where cells convert biochemical energy from nutrients into ATP, and it involves redox reactions (oxidation-reduction reactions). These reactions require electron carriers to transfer electrons.

Step 2: Review the role of NAD$^+$ (Nicotinamide adenine dinucleotide). NAD$^+$ is a key electron carrier in cellular respiration. It accepts electrons during glycolysis and the citric acid cycle, becoming NADH, which then donates electrons to the electron transport chain.

Step 3: Examine the role of FADH$_2$ (Flavin adenine dinucleotide). FADH$_2$ is another electron carrier involved in cellular respiration, specifically in the citric acid cycle. It donates electrons to the electron transport chain but is less prominent compared to NAD$^+$.

Step 4: Clarify the roles of ATP and cAMP. ATP is the primary energy currency of the cell, not an electron carrier. cAMP is a signaling molecule involved in various cellular processes, not directly involved in redox reactions of cellular respiration.

Step 5: Conclude that NAD$^+$ is the primary electron carrier involved in the redox reactions of cellular respiration, as it plays a central role in transferring electrons during glycolysis, the citric acid cycle, and the electron transport chain.