Page 2 - HA

(b) Active transport
(c) Diffusion
(d) Endocytosis
9. Basic 'unit' of life is:
(a) Protein
(b) Glucose
(c) Cell
(d) Bones
10. The diffusion of water across a selectively permeable membrane is called
(a) osmotic pressure.
(b) osmosis.
(c) pinocytosis.
(d) active transport.

Subjective

Sl/No Questions Marks Level
1 Select the correct match. 1 E
(a) Cell was first discovered - 1839
(b) The term ‘protoplasm’ was coined - 1665
(c) The nucleus was discovered – 1831
(d) Cell theory was proposed – 1674
2 What would happen if the plasma membrane ruptures or 1 E
breaks down?
3 Explain the process by which substances like carbon dioxide 1 Av
(CO2) and water (H2O) move in and out of the cell.
4 (a) Draw a neat diagram of a cell and label the three basic 3 Av
parts.
(b) Write one function of each part.
5 (a) Give two examples of each: 3 D
i. Prokaryotic organisms
ii. Eukaryotic organisms
iii. Unicellular organism
iv. multicellular organism
Write the difference between osmosis and diffusion.
6 Why is plasma membrane called a selectively permeable 3 D
membrane? How do the substances like CO2 and water
move in and out of cell?