https://www.facebook.com/113140128059279/

The Doctors Educational Academy, Khairpur Mir's, opposite women college , Station Road khairpur Mir's, Khairpur (2026)

Q: What is the address?

Opposite Women College , Station Road Khairpur Mir's

27/04/2026

09/04/2026

Biology practice test
Doctor tuition center Khairpur mirs.
Select the best choice of the followings
1.Which of the following is known as "Animal Starch"?
A) Cellulose
B) Glycogen
C) Starch
D) Chitin
2.The bond between two monosaccharides is called:
A) Peptide bond
B) Phosphodiester bond
C) Glycosidic bond
D) Ester bond
3.Which of the following is a non-reducing sugar?
A) Glucose
B) Fructose
C) Lactose
D) Sucrose
4.Cotton fibers are primarily made of:
A) Starch
B) Glycogen
C) Cellulose
D) Chitin
5.A carbohydrate with 3 to 7 carbon atoms is classified as:
A) Monosaccharide
B) Disaccharide
C) Oligosaccharide
D) Polysaccharide
6.The most abundant organic compound on Earth is:
A) Protein
B) DNA
C) Cellulose
D) Lipid
7.The basic building society blocks of proteins are:
A) Nucleotides
B) Fatty acids
C) Amino acids
D) Glycerol
8.How many standard amino acids are used in protein synthesis?
A) 10
B) 20
C) 45
D) 64
9.The primary structure of a protein is held together by:
A) Hydrogen bonds
B) Peptide bonds
C) Ionic bonds
D) Hydrophobic interactions
10.Collagen is an example of a _____ protein.
A) Globular
B) Regulatory
C) Fibrous
D) Enzymatic
11.Haemoglobin shows which level of protein structure?
A) Primary
B) Secondary
C) Tertiary
D) Quaternary
12.Which of the following is a sulfur-containing amino acid?
A) Glycine
B) Alanine
C) Methionine
D) Valine
13.Triglycerides are composed of:
A) 3 Glycerols + 1 Fatty Acid
B) 1 Glycerol + 3 Fatty Acids
C) 1 Glucose + 3 Fatty Acids
D) 3 Amino acids + Glycerol
14.Phospholipids are important because they:
A) Form the cell membrane bilayer
B) Store genetic information
C) Act as enzymes
D) Provide instant energy
15.Which lipid is used as a precursor for steroid hormones like testosterone?
A) Wax
B) Cholesterol
C) Phospholipid
D) Triglyceride
16.Unsaturated fatty acids are generally _____ at room temperature.
A) Solid
B) Liquid
C) Gaseous
D) Crystalline
17.Which of the following is a "True Wax"?
A) Beeswax
B) Paraffin wax
C) Ear wax
D) Both A and C
18.The monomer of a nucleic acid is a:
A) Nucleoside
B) Nucleotide
C) Nitrogenous base
D) Pentose sugar
19.Which base is found in RNA but absent in DNA?
A) Adenine
B) Guanine
C) Thymine
D) Uraci
20.In DNA, Guanine always pairs with Cytosine via:
A) 2 Hydrogen bonds
B) 3 Hydrogen bonds
C) Peptide bonds
D) Covalent bonds
21.The sugar found in DNA is:
A) Ribose
B) Deoxyribose
C) Glucose
D) Fructose
22.ATP (Adenosine Triphosphate) is technically a:
A) Protein
B) Lipid
C) Nucleotide
D) Carbohydrate
23.The 'backbone' of DNA is made of:
A) Sugar and Base
B) Phosphate and Base
C) Sugar and Phosphate
D) Nitrogenous bases only