Select the incorrect statement.
(a) Lipid are insoluble in water
(b) Glycerol is trihydoxy propane
(c) Lecithin is a glycoprotein
(d) Adenosine is a nucleotide

Options

A. Lipid are insoluble in water
B. Glycerol is trihydoxy propane
C. Lecithin is a glycoprotein
D. Adenosine is a nucleotide

Answer

To solve the question, we need to analyze each statement provided and determine which one is incorrect.

### Step-by-Step Solution:

1. **Statement (a): Lipids are insoluble in water.**
- Lipids are known to be hydrophobic, meaning they do not dissolve in water. This statement is true.

2. **Statement (b): Glycerol is trihydroxy propane.**
- Glycerol has three hydroxyl (-OH) groups attached to a three-carbon propane backbone. According to IUPAC nomenclature, it is indeed called trihydroxypropane. This statement is true.

3. **Statement (c): Lecithin is a glycoprotein.**
- Lecithin is a phospholipid, not a glycoprotein. It is often associated with cell membranes and is involved in lipid metabolism. This statement is incorrect.

4. **Statement (d): Adenosine is a nucleotide.**
- Adenosine is actually a nucleoside, which consists of a nitrogenous base (adenine) and a sugar (ribose). It does not contain a phosphate group, which is required for a nucleotide. This statement is also incorrect.

### Conclusion:
- The incorrect statements are (c) Lecithin is a glycoprotein and (d) Adenosine is a nucleotide. However, since the question asks for a single incorrect statement, we will select (c) as the primary incorrect statement.

### Final Answer:
**(c) Lecithin is a glycoprotein.**

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