22765.The number of amino acids and number of peptide bonds in a linear tetrapeptide (made of different amino acids) are respectively
4 and 4
5 and 5
5 and 4
4 and 3
22766.Insulin production and its action in human body are responsible for the level of diabetes. This compound belongs to which of the following categories?
A co–enzyme
A hormone
An enzyme
An antibiotic
22768.Synthesis of each molecule of glucose in photosynthesis involves
18 molecules of ATP
10 molecules of ATP
8 molecules of ATP
6 molecules of ATP
22769.What is the volume of water consumed during acid hydrolysis of 1.368 Kg of sucrose? (Given – molar masses of sucrose = 342, water = 18, density of water = 1 g/cm3)
0.072 dm3
0.720 dm3
0.18 dm3
0.018 dm3
22771.In DNA, the consecutive deoxynucleotides are connected via
phospho diester linkage
phospho monoester linkage
phospho triester linkage
amide linkage
22774.In a protein molecule, various amino acids are linked together by
Peptide bond
Dative bond
α–glycosidic bond
β–glycosidic bond
22778.Which of the following hormones is produced under the condition of stress which stimulates glycogenolysis in the liver of human beings?
Thyroxin
Insulin
Adrenaline
Estradiol
22779.Which one of the following B group vitamins can be stored in our body?
Vitamin B1
Vitamin B2
Vitamin B6
Vitamin B12
22781.Which of the following carbohydrates are branched polymer of glucose?
(i) Amylose
(ii) Amylopectin
(iii) Cellulose
(iv) Glycogen
(i) Amylose
(ii) Amylopectin
(iii) Cellulose
(iv) Glycogen
(ii) and (iv)
(i) and (ii)
(iii) and (iv)
(ii) and (iv)
22782.The central dogma of molecular genetics states that the genetic information flows from
Amino acids → Proteins → DNA
DNA → Carbohydrates → Proteins
DNA → RNA → Proteins
DNA → RNA → Carbohydrates
22783.Which one of the following acids is a vitamin?
Ascorbic acid
Aspartic acid
Adipic acid
Saccharic acid
22784.The correct statement regarding RNA and DNA respectively is:
The sugar component in RNA is ribose and the sugar component in DNA is 2–dexyribose
The sugar component in RNA is arabinose and the sugar component in DNA is ribose
The sugar component in RNA is 2'–dexyribose and the sugar component in DNA is arabinose
The sugar component in RNA is arabinose and the sugar component in DNA is 2'–deoxyribose