A molecule of stachyose contains how many carbon atoms?
6
12
18
24
D.
24
Depending upon the number of monosaccharide molecules condensed to form oligosaccharides such as disaccharides (e.g. sucrose), trisaccharides (e.g., raffinose), tetrasaccharides (e.g. stachyose) etc. Stachyose contains 24 carbon atoms in its structure.
What type of sugar molecule is present in DNA?
D-3-deoxyribose
D-ribose
D-2-deoxyribose
D-glucopyranose
The letter 'D' in D-carbohydrates represents
Dextrorotation
Direct synthesis
Configuration
Mutarotation
In DNA, the consecutive deoxynucleotides are connected by
phosphodiester linkage
phosphomonoester linkage
phosphotriester linkage
amide linkage
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
