Daily Biology (IX)

1) A cell can be defined as (tick mark the most appropriate answer from the following):-

a) cell is the structural unit of living beings.

b) cell is the functional unit of living beings.

c) Cell is the structural and functional unit of all living beings.

2) state whether the following statements are true or false:

a) the cell membrane is the living part of the cell.

b) The cell wall is formed of cellulose is nonliving.

c) endoplasmic reticulum is a network of single membrane.

d) Ribosomes are the sites of protein synthesis.

e) Golgi bodies are the store houses of energy.

f) Lysosomes are also called as the sucidal bags of the cell.

g) The energy currency of the cell is D. N. A.

3) Enlist seven living parts found in the cytoplasm of the cell.

4) Choose appropriate words from the list given below to suitably match the statements under the column A. Write the word in the appropriate space provided under Column B.

( ribosome, lysosomes, cytoplasm, nucleus, mitochondria, cell membrane, Golgi body, Centrosome)

COLUMN A COLUMN B

a) produce chemical energy.

b) sites of protein synthesis.

c) secrets various substances.

d) destroy for in substances.

e) contains geans.

f) most of the chemical reactions in the cell take place here.

g) Outer covering of the cell, which is semipermeable.

h) structure made up of two centrioles.

5) Name the structures which perform the following functions inside the plant cell.

  Function Structure

a) trap sunlight for photosynthesis.

b) provide colour to the petals.

c) It has genes which are carried from parent to the offspring.

d) this is made up of cellulose.

6) Complete the blank space in the table given below.

part of the cell function

a) ____ assists cell division and is found only in animal cells.

b) Nucleus _______

c) ribosome ______

d) ________. filled will cell sa,p found mostly in plant cells.

e) Ce wall ______

7) State the functions of the following organelles found in the cells..

Organelle Functions

a) Centriole

b) Chloroplast

c) Lysosome

d) Mitochondria

e) Golgi body

f) Chromosome

8) Differentiate between the following structure found in cells.

a) chromosome and centrosome.

b) ribosome and endosplasmic reticulum.

c) nucleus and nucleolus

d) endosplasmic reticulum and vacuole 

e) cytoplasm and Protoplasm.

f) cell wall and cell membrane.

9) state whether the following statements are true or false:

a) cytoplasm is the part of the cell found between the nucleus and cell membrane.

b) all cells have a cell wall.

c) chromosomes are structures found in cytoplasm.

d) Ribosomes are 'sites' in a Cell where fat is synthesized.

e) centrosomes participate in cell division.