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

Essential Amino Acids

Biochemistry

3. Amino Acids

Essential Amino Acids

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Multiple Choice

Which two fatty acids are considered essential fatty acids in human nutrition?

Lauric acid and myristic acid

Linoleic acid and alpha-linolenic acid

Palmitic acid and arachidonic acid

Oleic acid and stearic acid

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Understand the concept of essential fatty acids: Essential fatty acids are those that the human body cannot synthesize and must be obtained through the diet. They are critical for various physiological functions, including cell membrane structure and signaling pathways.

Identify the two essential fatty acids in human nutrition: Linoleic acid (an omega-6 fatty acid) and alpha-linolenic acid (an omega-3 fatty acid) are considered essential because the body lacks the enzymes to introduce double bonds at the omega-3 and omega-6 positions.

Review the incorrect options: Lauric acid and myristic acid are saturated fatty acids and not essential. Palmitic acid is also saturated, and arachidonic acid, while important, can be synthesized from linoleic acid. Oleic acid and stearic acid are non-essential fatty acids as the body can produce them.

Understand the significance of linoleic acid and alpha-linolenic acid: Linoleic acid is a precursor for arachidonic acid and other omega-6 fatty acids, while alpha-linolenic acid is a precursor for eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), which are omega-3 fatty acids.

Conclude that linoleic acid and alpha-linolenic acid are the correct answer based on their essential roles and inability to be synthesized by the human body.