Question

Identify the correct statements about biomolecules. A. Lipids are generally water soluble. B. Proteins are polypeptides. C. Polysaccharides are long chains of sugars. D. Adenine and guanine are substituted pyrimidines. E. Almost all enzymes are proteins. Choose the correct answer from the options given below :

• A. C, D and E only
• B. B, C and E only
• C. B, D and E only
• D. A, B and C only

Hint:

To remember nitrogenous bases: Pure As Gold (Purines = Adenine, Guanine). Pyrimidines are CUT (Cytosine, Uracil, Thymine).

Answer 1

The Correct Option is B

Step 1 : Understanding the Question
This is a conceptual check of biomolecular classifications and chemical properties, covering lipids, proteins, carbohydrates, nucleic acids, and enzymes.
Step 2 : Key Formulas and approach
The approach is to evaluate the biochemical validity of each statement. We look for correct definitions of polymers, solubility, and nitrogenous base categories.
Step 3 : Detailed Explanation

Statement A: Lipids are hydrophobic and (A) insoluble in water. Statement A is false.

Statement B: Proteins are polymers of amino acids linked by peptide bonds, thus they are (B) polypeptides. Statement B is true.

Statement C: Polysaccharides are indeed (C) long chains of monosaccharides (sugars). Statement C is true.

Statement D: Adenine and Guanine are (D) Purines. Statement D is false.

Statement E: While ribozymes (RNA enzymes) exist, the (E) majority of enzymes are proteins. Statement E is true.

Step 4 : Final Answer
Statements B, C, and E are correct. Therefore, the correct choice is option (B).