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

9. Carbohydrates

Starch

Biochemistry

9. Carbohydrates

Starch

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Multiple Choice

Cellulose fibers resemble _ in proteins; whereas amylose's structure is similar to ___.

α-helices; β-sheets.

β-sheets; α-helices.

β-sheets; the hydrophobic core.

α-helices; β-turns.

β-turns; coiled-coils.

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Verified step by step guidance

Understand the structure of cellulose: Cellulose is a polysaccharide consisting of a linear chain of β-D-glucose units. The chains are linked by β(1→4) glycosidic bonds, forming a rigid, straight structure.

Recognize the structure of amylose: Amylose is a component of starch and is composed of α-D-glucose units linked by α(1→4) glycosidic bonds, resulting in a helical structure.

Compare cellulose to protein structures: The linear, extended structure of cellulose is similar to β-sheets in proteins, which are also extended and form sheet-like structures.

Compare amylose to protein structures: The helical structure of amylose resembles α-helices in proteins, which are coiled and helical.

Match the structures to the options: Based on the structural similarities, cellulose fibers resemble β-sheets, and amylose's structure is similar to α-helices.