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

Carbohydrates

Biochemistry

1. Introduction to Biochemistry

Carbohydrates

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Multiple Choice

Which general formula can be used to identify carbohydrates?

$C_nH_{2n-2}O_n$

$C_nH_{2n}O_{2n}$

$C_n(H_2O)_n$

$C_nH_{2n+2}O_n$

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Verified step by step guidance

Step 1: Understand the definition of carbohydrates. Carbohydrates are organic molecules composed of carbon (C), hydrogen (H), and oxygen (O) atoms, typically in a ratio that reflects the general formula (CH2O)n.

Step 2: Analyze the given formulas. Each formula represents a different arrangement of carbon, hydrogen, and oxygen atoms. Compare these formulas to the typical structure of carbohydrates.

Step 3: Recall that carbohydrates are often referred to as 'hydrates of carbon,' meaning their structure can be simplified to a repeating unit of (CH2O). This is why the correct general formula for carbohydrates is Cn(H2O)n.

Step 4: Evaluate the incorrect options. For example, $C_nH_{2n-2}O_n$ and $C_nH_{2n+2}O_n$ do not match the typical ratio of hydrogen to oxygen found in carbohydrates. Similarly, $C_nH_{2n}O_{2n}$ suggests an excess of oxygen, which is not characteristic of carbohydrates.

Step 5: Conclude that the correct general formula for identifying carbohydrates is $C_n(H_2O)_n$, as it accurately represents the molecular structure and ratio of elements in carbohydrates.