12th Biology Model Question Paper. We covered all the 12th Biology Model Question Paper MCQs in this post for free so that you can practice well for the exam.
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12th Biology Model Objective Question Paper for Students
Which one of the following is an organelle that is NOT found in prokaryotic cells?
(a) Cell wall
(b) Mitochondria
(c) Plasma membrane
(d) Ribosome
Option b – Mitochondria
Which one of the following parts of the body does NOT take part in the process of breathing?
(a) Bronchi
(b) Bowman’s capsule
(c) Diaphragm
(d) Trachea
Option b – Bowman’s capsule
Which one of the following elements is needed in the human body to transfer electrical signals by nerve cells?
(a) Lithium
(b) Sodium
(c) Rubidium
(d) Caesium
Option b – Sodium
Which one of the following groups of organisms forms a food chain?
(a) Grass, human, and fish
(b) Grass, goat, and human
(c) Tree, tree cutter, and tiger
(d) Goat, cow, and human
Option b – Grass, goat, and human
If by an unknown accident, the acid-secreting cells of the stomach wall of an individual are damaged, digestion of which one of the following biomolecules will be affected to a greater extent?
(a) Protein
(b) Lipid
(c) Carbohydrate
(d) Protein and Carbohydrate
Option a – Protein
Crossing over occurs during meiosis at:
(a) Leptotene
(b) Anaphase-I
(c) Pachytene
(d) Dyskinesis
Option c – Pachytene
Which of the following processes makes direct use of oxygen?
(a) Glycolysis
(b) Fermentation
(c) Citric Acid Cycle
(d) Electron transport
Option d – Electron transport
The well-known antibiotic penicillin is obtained from this plant group:
(a) Algae
(b) Fungi
(c) Lichen
(d) Angiosperm
Option b – Fungi
The accidental touch of Nettle leaves creates a burning sensation, which is due to the injection of:
(a) Hydrochloric acid
(b) Methanoic acid
(c) Citric acid
(d) Sulphuric acid
Option b – Methanoic acid
AIDS is caused by a virus whose genetic material is:
(a) Single-stranded circular DNA
(b) Double-stranded DNA
(c) Single-stranded RNA
(d) Double-stranded RNA
Option c – Single-stranded RNA
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