Question

II. Fill in the blanks
1. Cell wall is found only in cells.
2. Ribosomes are located on the surface of
3. All the components of a cell including the cell
membrane is called
4. Cristae are modifications of the inner membrane of
5. A plastid shows two distinct regions and
6. A true nucleus is absent in bacteria and
7. Chromosomes are made
up
of
and
8. All organisms are placed in
except bacteria and
cyanobacteria.
9. Two types of nucleic acids are
and​

Answer 1

★Question★

II. Fill in the blanks

1. Cell wall is found only in cells.

2. Ribosomes are located on the surface of

3. All the components of a cell including the cell

membrane is called

4. Cristae are modifications of the inner membrane of

5. A plastid shows two distinct regions and

6. A true nucleus is absent in bacteria and

7. Chromosomes are made up of

8. All organisms are placed inexcept bacteria and

cyanobacteria.

9. Two types of nucleic acids are

✰Answer ✰

(1) Plant cells

(2) Endoplasmic Reticulum (ER)

(3) Plasma Membrane

(4) Mitochondria

(5) Grana and Stroma

(6) E. coil

(7) DNA and Protein

(8) Eukaryotes

(9) DNA and RNA

Answer 2

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1. Cell wall is found only in plant cells.

• Plant cell, have another rigid outer covering called the cell wall.

2. Ribosomes are located on the surface of endoplasmic reticulum.

• Endoplasmic reticulum consists of an irregular network of channels.

3. All the components of a cell including the cell membrane is called plasmalemma.

• Plasmalemma is a semipermeable membrane Erich is responsible for regulating the exchange of materials.

4. Cristae are modifications of the inner membrane of mitochondria.

• Mitochondria is a power house of the cell.

5. A plastid shows two distinct regions stroma and grana.

• Plastids are responsible for storing of food. It also contains pigments which is used in the process of photosynthesis.

6. A true nucleus is absent in bacteria and nostoc.

• Robert Brown discovered the nucleus in the riot cells of orchid plant.

7. Chromosomes are made

up of deoxyribonucleic and protein.

• There are 23 pairs of chromosomes in the human body.

8. All organisms are placed in eukaryotic cell

except bacteria and cyanobacteria.

• Eukaryotic cells are well defined and surrounded by a nuclear membrane.

9. Two types of nucleic acids are RNA and DNA.

• DNA is a Reserve Bank of genetic information and it acts as a unit of heredity.