The letter 'D' in D-carbohydrates represents
Dextrorotation
Direct synthesis
Configuration
Mutarotation
C.
Configuration
'D' indicates the configuration of a carbohydrate. It represents the position of second last -OH group in any carbohydrate. If -OH is present on the right side, it is called 'D' type configuration and if -OH is present on the left side, it is known as 'L' type configuration.
Enzymatic reactions are given in Column I and enzymes in Column II.
Column I | Column II |
A. Maltose → Glucose | i. Zymase |
B. Sucrose → Glucose + Fructose | ii. Pepsin |
C. Glucose → Ethyl alcohol + CO2 | iii. Maltase |
D. Starch → Maltose | iv. Invertase |
E. Proteins → Amino acids | v. Diastase |
Choose the correct matching of enzymatic reaction and enzyme that catalyses the correct reaction from the codes given below.
A - ii; B - iv; C - v; D - iii; E - i
A - iii; B - iv; C - i; D - v; E - ii
A - v; B - iv; C - ii; D - i; E - iii
A - v; B - iii; C - iv; D - ii; E - i
In double strand helix structure of DNA, heterocyclic base cytosine forms hydrogen bond with
Adenine
Guanine
Purine
Uracil
What type of sugar molecule is present in DNA?
D-3-deoxyribose
D-ribose
D-2-deoxyribose
D-glucopyranose
In DNA, the consecutive deoxynucleotides are connected by
phosphodiester linkage
phosphomonoester linkage
phosphotriester linkage
amide linkage