The Cell Revision

 

1. The basic structural and functional unit of life is:
   a) Tissue
   b) Organ
   c) Cell
   d) Organ system

2. Who discovered the cell for the first time?
   a) Robert Hooke
   b) Anton van Leeuwenhoek
   c) Schleiden
   d) Schwann

3. The study of cells is called:
   a) Biology
   b) Cytology
   c) Physiology
   d) Histology

4. Which instrument is used to observe cells?
   a) Telescope
   b) Microscope
   c) Periscope
   d) Barometer

5. The jelly-like substance present inside the cell is called:
   a) Nucleus
   b) Cytoplasm
   c) Cell membrane
   d) Vacuole

6. The control center of the cell is:
   a) Cytoplasm
   b) Cell wall
   c) Nucleus
   d) Ribosome

7. Which structure is found only in plant cells?
   a) Cell membrane
   b) Cytoplasm
   c) Cell wall
   d) Nucleus

8. The outermost covering of an animal cell is:
   a) Cell wall
   b) Plasma membrane
   c) Cytoplasm
   d) Nuclear membrane

9. Which organelle is known as the powerhouse of the cell?
   a) Ribosome
   b) Golgi body
   c) Mitochondria
   d) Vacuole

10. The process by which substances move across the cell membrane is called:
    a) Respiration
    b) Diffusion
    c) Digestion
    d) Circulation

11. Which cell organelle contains chlorophyll?
    a) Vacuole
    b) Chloroplast
    c) Mitochondria
    d) Ribosome

12. Vacuoles in plant cells are generally:
    a) Small and many
    b) Absent
    c) Large and prominent
    d) Round and tiny

13. Which of the following is present in both plant and animal cells?
    a) Cell wall
    b) Chloroplast
    c) Nucleus
    d) Plastids

14. The nucleus is separated from the cytoplasm by:
    a) Cell wall
    b) Plasma membrane
    c) Nuclear membrane
    d) Cytoskeleton

15. Which scientist proposed the cell theory?
    a) Newton and Einstein
    b) Schleiden and Schwann
    c) Hooke and Darwin
    d) Mendel and Pasteur

16. Ribosomes are mainly responsible for:
    a) Digestion
    b) Respiration
    c) Protein synthesis
    d) Photosynthesis

17. Which type of cell lacks a true nucleus?
    a) Plant cell
    b) Animal cell
    c) Prokaryotic cell
    d) Eukaryotic cell

18. The movement of water through a semipermeable membrane is called:
    a) Diffusion
    b) Osmosis
    c) Respiration
    d) Excretion

19. Which cell organelle helps in packaging and transport of substances?
    a) Golgi apparatus
    b) Nucleus
    c) Ribosome
    d) Lysosome

20. Cells are generally microscopic because:
    a) They are invisible
    b) They need less food
    c) A small size helps efficient functioning
    d) They do not grow

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While preparing a temporary mount of onion peel, which stain is commonly used?
a) Safranin
b) Iodine
c) Methylene blue
d) Ink

The onion peel used in the activity is taken from:
a) Root
b) Stem
c) Leaf
d) Inner epidermis

Which instrument is used to observe the prepared slide?
a) Telescope
b) Microscope
c) Magnifying glass
d) Thermometer

In cheek cell observation, the stain used is:
a) Iodine
b) Safranin
c) Methylene blue
d) Ink

Which structure is clearly visible after staining the cell?
a) Cytoplasm
b) Nucleus
c) Vacuole
d) Cell wall only

Onion peel cells are generally:
a) Round
b) Irregular
c) Rectangular
d) Oval

Which structure is absent in cheek cells?
a) Nucleus
b) Cytoplasm
c) Cell membrane
d) Cell wall

The cover slip is placed carefully to avoid:
a) Breaking the slide
b) Air bubbles
c) Drying of stain
d) Loss of color

Cheek cells are obtained from:
a) Skin
b) Tongue
c) Inner lining of the cheek
d) Teeth

Onion peel cells belong to:
a) Animal cells
b) Plant cells
c) Bacterial cells
d) Fungal cells