Which one of the following is a non-reducing sugar?
Maltose
Lactose
Sucrose
Glucose
C.
Sucrose
Only sucrose is a non-reducing sugar as ii does not reduce Tollen's reagent or Benedict's solution. (due to the absence of - CHO group).
In DNA, the consecutive deoxynucleotides are connected by
phosphodiester linkage
phosphomonoester linkage
phosphotriester linkage
amide linkage
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
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
The letter 'D' in D-carbohydrates represents
Dextrorotation
Direct synthesis
Configuration
Mutarotation