Biomolecules

This is a Multiple Answer Type Questions as classified in NCERT Exemplar

The Correct option is a.

Proteins contain one or more polypeptide chains. When each polypeptide of a protein's amino acids is joined in a precise order, a proteins' main structure is referred to as its primary structure. This one is the linear structure with no bonds other than the ones between adjacent amino acids. The sequence of amino acids in the primary structure is pre-determined by the genetic code of an individual and thus is a specific sequence.

This is a Multiple Answer Type Questions as classified in NCERT Exemplar

The Correct option is b.

Nucleic acids are nucleotide polymers linked together by phosphodiester linkage. DNA and RNA are two examples. Nucleotides are formed by linking of nucleosides with three phosphate groups consuming a significant amount of energy making it an endothermic reaction.

This is a Multiple Answer Type Questions as classified in NCERT Exemplar

(a) 5′ and 3′ linkages are present between pentose sugars of nucleotides.

Phosphodiester links the two nucleotides together to form a dinucleotide.

Between the pentose sugars of nucleotides, there are 5′ and 3′ connections. In the process of adding phosphate to a dinucleotide, a significant quantity of energy is consumed.

This is a Multiple Answer Type Questions as classified in NCERT Exemplar

Ans: The Correct option is b.

Ascorbic acid is the chemical name for vitamin C. Aspartic acid is an amino acid, adipic acid is a dicarboxylic acid with an eight-carbon chain, and saccharic acid is a dicarboxylic acid made by oxidising glucose with HNO₃ Vitamin C is a water-soluble vitamin that serves a variety of activities in the human body.

This is a Multiple Answer Type Questions as classified in NCERT Exemplar

Ans: The Correct option is b.

The structure described in option (b) reflects sucrose, which has a C₁−C₂ glycosidic bond between α−D− glucose and β−D− fructose.

This is a non-reducing sugar since the reducing groups of glucose and fructose are involved in the creation of glycosidic linkages.

This is a Multiple Answer Type Questions as classified in NCERT Exemplar

Hydrogen bonds hold the α− helical structure of proteins together. A polypeptide chain creates all potential hydrogen bonds by twisting into a

right-handed helix with the −NH group of each amino acid residue hydrogen linked to a>C=O neighboring turn of helix.

Correct option is C

This is a Multiple Answer Type Questions as classified in NCERT Exemplar

The configuration of different anomers  at C-I is distinct. It is known as the form if the hydroxyl group (-OH) is present on the right side of anomeric carbon, and it is known as the? form if the hydroxyl group is present on the left side. As a result, option (c) represents anomers among all the supplied pairs.

Correct option is c.

This is a Multiple Answer Type Questions as classified in NCERT Exemplar

Sucrose is a disaccharide (sometimes known as cane sugar). One molecule of glucose and one molecule of fructose are produced when sucrose is digested. The reaction is depicted in the diagram below.

Correct option is c.

This is a Multiple Answer Type Questions as classified in NCERT Exemplar

Ans: The Correct option is b. In humans and animals, glycogen is mostly synthesized and stored in the liver and skeletal muscle cells. Glycogen accounts for around 5-6% of the liver's fresh weight, and an adult liver weighing  1.5kg can store approximately 100-120 gms of glycogen.