Biology entry test topics

BIOLOGY MCQS SET - 03
MCAT / MDCAT – PREPARED BY SIR SUBHANI
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🔬 Cells & Subcellular Organelles – Part 1 (1–50 MCQs)

Cell Theory & Basics (1–10)

1. The cell theory was proposed by:
A) Schleiden & Schwann
B) Darwin & Wallace
C) Watson & Crick
D) Pasteur & Koch
Answer: A → Schleiden (plants) & Schwann (animals).
2. The basic unit of structure and function in organisms is:
A) Tissue
B) Cell
C) Organelle
D) Organ
Answer: B
3. Who first observed living cells?
A) Robert Hooke
B) Anton van Leeuwenhoek
C) Robert Brown
D) Virchow
Answer: B
4. The statement “All cells arise from pre-existing cells” was given by:
A) Schleiden
B) Virchow
C) Hooke
D) Schwann
Answer: B
5. Prokaryotic cells lack:
A) Ribosomes
B) DNA
C) Nucleus & membrane-bound organelles
D) Cytoplasm
Answer: C
6. Eukaryotic cells are different from prokaryotic because they have:
A) Smaller ribosomes
B) Membrane-bound nucleus & organelles
C) No plasma membrane

, D) No DNA
Answer: B
7. The average size of a prokaryotic cell is:
A) 1–10 µm
B) 10–100 µm
C) 100–1000 µm
D) Smaller than 1 nm
Answer: A
8. Plasma membrane is mainly composed of:
A) Phospholipids & proteins
B) Cellulose
C) Chitin
D) Starch
Answer: A
9. The model of plasma membrane is called:
A) Unit membrane model
B) Fluid mosaic model
C) Nuclear pore model
D) Cytoplasmic model
Answer: B
10. The main function of plasma membrane is:
A) Protein synthesis
B) Selective permeability
C) Energy production
D) DNA replication
Answer: B



Nucleus & Genetic Material (11–20)

11. The control center of the cell is:
A) Cytoplasm
B) Nucleus
C) Ribosome
D) Mitochondrion
Answer: B
12. Nucleolus is the site of:
A) DNA replication
B) Ribosome formation
C) ATP synthesis
D) Protein modification
Answer: B
13. Chromatin is composed of:
A) DNA only
B) DNA + histone proteins