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who proposed that structure of DNA is double helix ?
The double helix structure of DNA was proposed by James D. Watson and Francis H.C. Crick in 1953. They described how two DNA strands form a helical structure held together by complementary base pairing.
by which bond , base of one nucleotide and base of another nucleotide are joined together ?
In DNA, the bases of one nucleotide are joined to the bases of another nucleotide by hydrogen bonds. Adenine pairs with thymine via two hydrogen bonds, and cytosine pairs with guanine via three hydrogen bonds.
which pairs of bases are true for linkage between two chain of polynucleiotide ?
In the double-helix structure of DNA, adenine (A) pairs with thymine (T) using two hydrogen bonds, and guanine (G) pairs with cytosine (C) using three hydrogen bonds. Therefore, adenine-thymine is the correct base pair.
how many hydrogen bonds between base G and Base C are present in structure of DNA ?
In the DNA structure, guanine (G) forms three hydrogen bonds with cytosine (C). This triple bonding contributes to the stability of the DNA molecule.
if a person bleeds by his gingiva , so what would you suggest to eat to prevent the disease ?
Bleeding gums, or gingival bleeding, can be a sign of Vitamin C deficiency, also known as scurvy. Citrus fruits like oranges, lemons, and grapefruits are rich in Vitamin C and can help prevent this condition.
which subgroup isn’t possible for vitamin ?
Vitamin B4 is not recognized as a vitamin by modern science. The B vitamins include B1 (Thiamine), B2 (Riboflavin), B3 (Niacin), B5 (Pantothenic Acid), B6 (Pyridoxine), B7 (Biotin), B9 (Folate), and B12 (Cobalamin). Therefore, B4 is not a possible subgroup for vitamins.
__________term is familiar for vitamin nowadays
The term 'vitamin' is the correct and familiar term used nowadays. The term 'vitamine' was originally coined by Casimir Funk in 1912, but the 'e' was later dropped.
which sugar indicates mutarotation ?
Mutarotation is the change in the optical rotation because of the change in the equilibrium between two anomers, when the corresponding stereocenters interconvert. All reducing sugars (glucose, fructose, maltose) exhibit mutarotation.
Which sugar isn’t indicating mutarotation?
Sucrose does not show mutarotation because it is a non-reducing sugar. It is composed of glucose and fructose linked via their anomeric carbons, preventing the free aldehyde or keto group necessary for mutarotation.
Molecula rmass of_ _ carbohydrate is 180 gm/mol
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