Multiple Choice Questions 10×1=10
1
How will you differentiate between monosaccharides and polysaccharides?
A
Monosaccharides are single sugars
B
Polysaccharides are sweet in taste
C
Monosaccharides are present in plant cell wall
D
Polysaccharides dissolve easily
2
Which of the following is NOT a function of proteins?
A
Transport oxygen in the blood
B
Carry genetic information
C
Help in digesting food
D
Fight against pathogens
3
Some hormones are:
A
Carbohydrates
B
Proteins
C
Lipids
D
DNA
4
Which protein is responsible for blood clotting?
A
Actin
B
Myosin
C
Fibrin
D
Collagen
5
How many amino acids are present in hemoglobin?
6
Which protein is a component of hair and nails?
A
Collagen
B
Keratin
C
Hemoglobin
D
Fibrin
7
What are lipids?
A
Water-soluble compounds
B
Inorganic compounds
C
Proteins
D
Organic compounds insoluble in water but soluble in organic solvents
8
How many hydrogen bonds are formed between cytosine and guanine?
9
Where does the mRNA carry the nucleotide sequence to?
A
Nucleus
B
Ribosomes
C
Mitochondria
D
Cell membrane
10
What is the final product of translation?
A
DNA
B
mRNA
C
Protein
D
Ribosomes
Short Answer Questions 15×2=30
I
Name two common monosaccharides and two disaccharides.
II
What are the basic components of lipids? Draw their structures.
Hint: Lipids consist of glycerol and fatty acids
III
What is the key difference between catabolism and anabolism?
IV
Which biomolecules are studied in molecular biology?
V
Write different sources of carbohydrates?
VIII
What is the function of enzymes?
IX
What are amino acids? Write its general structure.
General Structure:
H2N — CH — COOH
|
R
X
What are the difference between saturated and unsaturated fatty acids?
XI
What are lipids? Write its composition?
XII
Differentiate between glycerol and fatty acids?
XIII
Differentiate between DNA and RNA?
XIV
Write types of RNA? Exercise
XV
Write composition of ribonucleotide? Exercise