NeetVictoryQuestion 1: Cell Organelles
Lysosomes contain the hydrolytic enzymes that are active at:
- A an acidic pH
- B any pH equally
- C an alkaline pH
- D a neutral pH only
Answer: A. an acidic pH
Why: They are lipases, proteases and carbohydrases.
NEET Biology: Cell: The Unit of Life. Chapter-wise Practice Questions and Test
Cell: The Unit of Life is a Class 11 Biology chapter that carries about 4.2% of the Biology questions in NEET. Practise it with 68 questions covering 6 topics, each with an explanation.
Practise Cell: The Unit of Life
Open in the appSets of 15 questions that adapt to your level, with an explanation for every answer.
Topics covered in Cell: The Unit of Life
- Cell Organelles (22 questions)
- Cell Theory and Cell Structure (18 questions)
- Cell Wall (6 questions)
- Cytoskeleton and Cell Inclusions (4 questions)
- Nucleus (7 questions)
- Plasma Membrane (11 questions)
How often Cell: The Unit of Life has come up in NEET
Across the 13 previous year papers, Cell: The Unit of Life had 48 questions, about 3.7 a year. The most in one paper was 6, in Re-AIPMT 2015.
| Paper | Questions from this chapter |
|---|---|
| NEET 2026 | 4 |
| NEET 2025 | 4 |
| NEET 2024 | 3 |
| NEET 2023 | 3 |
| NEET 2022 | 4 |
| NEET 2021 | 4 |
| NEET 2020 | 2 |
| NEET 2019 | 5 |
| NEET 2018 | 4 |
| NEET 2017 | 2 |
| NEET 2016 | 4 |
| Re-AIPMT 2015 | 6 |
| AIPMT 2014 | 3 |
Sample questions on Cell: The Unit of Life with answers
8 questions from the practice bank, spread across the chapter's topics. The full set is in the app.
Question 2: Cell Theory and Cell Structure
Rudolf Virchow's addition to the cell theory is:
- A omnis cellula-e cellula, i.e. new cells arise from the pre-existing cells
- B cells arise spontaneously
- C all the cells have a nucleus
- D all cells are of the same size
Answer: A. omnis cellula-e cellula, i.e. new cells arise from the pre-existing cells
Why: This completed the cell theory.
Question 3: Cell Wall
The middle lamella is mainly composed of:
- A lignin
- B chitin
- C cellulose
- D calcium pectate, which holds the neighbouring cells together
Answer: D. calcium pectate, which holds the neighbouring cells together
Why: It is the layer between the walls of the adjacent cells.
Question 4: Cytoskeleton and Cell Inclusions
The cytoskeleton is a network of:
- A filamentous proteinaceous structures in the cytoplasm
- B lipid molecules
- C DNA threads
- D carbohydrate granules
Answer: A. filamentous proteinaceous structures in the cytoplasm
Why: It helps in mechanical support, motility and the maintenance of the cell shape.
Question 5: Nucleus
The nucleolus is not a membrane-bound structure. It is the site for the active synthesis of:
- A DNA
- B lipids
- C ATP
- D rRNA
Answer: D. rRNA
Why: Cells with active protein synthesis have large nucleoli.
Question 6: Plasma Membrane
The passive transport of a molecule across the membrane, without using energy, takes place:
- A along the concentration gradient
- B only in dead cells
- C only with ATP
- D against the concentration gradient
Answer: A. along the concentration gradient
Why: Neutral solutes may move by the simple diffusion.
Question 7: Cell Organelles
The ribosomes of prokaryotes and eukaryotes have sedimentation coefficients of, respectively:
- A 50S and 30S
- B 80S and 70S
- C 60S and 40S
- D 70S and 80S
Answer: D. 70S and 80S
Why: Prokaryotic ribosomes are 70S (50S + 30S subunits); eukaryotic are 80S (60S + 40S).
Question 8: Cell Theory and Cell Structure
The Gram-positive bacteria differ from the Gram-negative bacteria in that:
- A they have a nucleus
- B they retain the crystal violet stain, because of a thick peptidoglycan wall
- C they have an outer membrane
- D they have no cell wall
Answer: B. they retain the crystal violet stain, because of a thick peptidoglycan wall
Why: The Gram-negative cells lose the stain after the alcohol wash.
Practise all of Cell: The Unit of Life
Open in the appFrequently asked questions
How many questions come from Cell: The Unit of Life in NEET?
Cell: The Unit of Life carries about 4.2% of the Biology questions in NEET. Across the 13 previous year papers on NeetVictory it appeared 48 times, about 3.7 questions a year.
Which class is Cell: The Unit of Life from?
Cell: The Unit of Life is a Class 11 Biology chapter in the NCERT syllabus.
Where can I practise Cell: The Unit of Life questions for NEET?
NeetVictory has 68 practice questions on Cell: The Unit of Life, each with an explanation, in sets of 15 that adapt to your level. This page shows a free sample.