Question

Fill in the function of each organelle and whether it is present in plant cell or animal cell. Serial number Name of the organelle Present or absent function in plant cell animal cell both cell Cell wall Cell membrane Nucleus Nucleolus Rough endoplasmic reticulum Smooth endoplasmic reticulum Golgi bodies Lysosomes Cytoskeleton Chloroplast Vacuole Centriole Mitochondria Bacteria Homework assignments 1 b Fill in the function of each of these structure Serial Number Structure Function Cell wall Cell membrane Ribosome Flagella Circular DNA Plasmid Slime Capsule Endospore

Answer 1

A.) 1. Cell wall- Absent in animal cell.

*Function: Provides rigidity and maintains shape of the cell.

2. Cell membrane- Present in both cells.

* Function: Transport of molecules across the cell membrane.

3.Nucleus- Present in both cells.

* Function: Regulation of cellular activities and contains the genetic information.

4. Nucleolus- Present in both cells.

* Function: Forms ribosomal RNA (rRNA).

5. Rough endoplasmic reticulum- Present in both.

* Function: Protein synthesis.

6. Smooth endoplasmic reticulum- Present in both.

* Function: Systhesis of lipids, steroid hormones and participates in detoxification process.

7. Golgi bodies- Present in both.

* Function: Modification and packaging of proteins and also assist in lipid transport.

8. Lysosomes- Present in both.

* Function: Contain hydrolytic enzymes.

9. Cytoskeleton- Present in both.

* Function: Provides structural support to the cell.

10. Chloroplast- Absent in animal cell.

* Function: Synthesis of Chlorophyll.

11. Vacuole- Present in both.

* Function: Provides support to the cell, storage of food (food vacuole-) and disposal of waste.

12. Centriole- Present in both.

* Function: Helps in cell division.

13. Mitochondria- Present in both.

* Function: Energy that is ATP production for carrying out various activities, therefore known as powerhouse of the cell.

B) 1b:

1. Cell wall: Maintains integrity and shape of the bacterial cell.
2. Cell membrane: Helps in transport of molecules across the cell.
3. Ribosome: Involved in protein synthesis.
4. Flagella: Provides motility to the bacterial cell.
5. Circular DNA: Monitors all the cellular activities.
6. Plasmid: Confers antibiotic resistance to the bacterial cell.
7. Slime: Helps in attachment to solid objects and protects cell from dessication.
8. Capsule: It protects bacterial cell from various enzymes and encodes for capsular antigen.
9. Endospore: Resistant form of bacteria to tide over unfavourable conditions.