Biomolecules

Step 1: Difference between Fibrous and Globular Proteins.
1. Fibrous Proteins are elongated, insoluble in water, and have a structural role in cells. Examples include collagen and keratin.
Globular Proteins, on the other hand, are spherical, soluble in water, and have functional roles such as enzymes and antibodies. Examples include hemoglobin and enzymes. 2. Fibrous Proteins have repetitive sequences of amino acids and provide structural strength, while Globular Proteins have complex, irregular sequences that are involved in catalytic and transport functions.

Step 2: Conclusion.
Fibrous proteins serve a structural role, while globular proteins have a more dynamic role in cellular functions.

Step 1: Difference between DNA and RNA.
1. DNA (Deoxyribonucleic Acid) is a double-stranded molecule that carries genetic information, while RNA (Ribonucleic Acid) is single-stranded and plays a role in protein synthesis.
2. DNA contains the sugar deoxyribose, while RNA contains the sugar ribose. The difference in the sugar molecule contributes to the structural differences between the two.

Step 2: Conclusion.
DNA stores genetic information, while RNA helps in the translation of genetic information into proteins.

Step 1: Understanding Vitamin B .
Vitamin B is also known as riboflavin. It is an essential nutrient that helps in the metabolism of carbohydrates, fats, and proteins. It is involved in energy production.

Step 2: Conclusion.
The chemical name of vitamin B is Riboflavin.

Step 1: Monomer of proteins.
The monomer of proteins is an amino acid. Amino acids are the building blocks of proteins, linked by peptide bonds.

Step 2: Conclusion.
The name of the monomer of proteins is Amino Acids.

Step 1: Understand the pairs.
The matching of pairs is based on chemical and common names of compounds, ions, and structures.

Step 2: Match the pairs.
- (i) Sucrose is a disaccharide and its chemical formula is . - (ii) Aldohexose refers to glucose, a six-carbon sugar with an aldehyde group. - (iii) Mn in the +7 oxidation state is typically seen in permanganates. - (iv) Primary valence refers to the charge associated with an ion, and for many metals, it relates to the negative ions they can form. - (v) R-O-R is the general structure for ethers, where R represents an alkyl group. - (vi) Hoffmann bromide is used in the Hofmann degradation reaction, which produces a primary amine. - (vii) Milk sugar is lactose, a disaccharide composed of glucose and galactose.

Step 3: Conclusion.
The pairs are correctly matched as follows: