Cell Biology Topic 1

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Cell Biology Topic 1 par Mind Map: Cell Biology Topic 1

1. Both have cell walls( most except animal cell for eukaryotic cell)

2. Both have ribosomes

3. Both have cytoplasm

4. Both have plasma membrane

5. Endoplasmic Reticulum

5.1. Structure:

5.1.1. Rough ER (with ribosomes)

5.1.2. Smooth ER (without ribosomes)

5.2. Function:

5.2.1. RER

5.2.1.1. Sort proteins using membrane vesicle

5.2.1.2. Insert newly made proteins into ER membrane

5.2.1.3. Attach carbohydrates to proteins and lipids ( glycosylation)

5.2.2. SER

5.2.2.1. Provide surface area for

5.2.2.1.1. detoxification of drugs and alcohol

5.2.2.1.2. carbohydrate metabolism

5.2.2.2. synthesis of lipid (esp phospholipids)

6. Golgi Apparatus

6.1. Structure:

6.1.1. stacks of flattened membrane, can have up to 40 to 100 stacks

6.2. Function:

6.2.1. collect and group proteins from ER, send processed groups out to other parts of the cell

6.2.2. carries out post-transitional modification of proteins

6.2.2.1. Adding sugar residues to proteins

6.2.2.2. Adding phosphate groups to proteins

7. Nucleus

7.1. Structure:

7.1.1. Contains chromatin, chromosome, nuclear membrane, nuclear pore, nucleolus

7.2. Function:

7.2.1. Storage of DNA

7.2.2. Assembly of ribosomal subunits

8. eukaryotic cell & prokaryotic cell

9. Prokaryotic cell (0.2-2μm) is much smaller than eukaryotic cell(10-100μm)

10. Eukaryotic cell have a nucleus while prokaryotic cell contain a nucleoid region

11. Prokaryotic cells do not have specialised organelles while eukaryotic cells have specialised organelles

12. Chloroplasts

12.1. Structure:

12.1.1. Double membrane

12.1.2. Thylakoid membrane system ( flattened compartment)

12.1.3. Stacked to form grana

12.1.4. Stroma

12.2. Function:

12.2.1. Contain chloroplasts to capture light energy

12.2.1.1. produce ATP and oxygen

12.2.2. Energy from light reaction is used to make carbohydrates from CO2

13. Mitochondria

13.1. Structure:

13.1.1. Contains both inner and outer membrane

13.1.2. Highly folded to form cristae

13.1.3. Enclose mitochondrial matrix

13.2. Function:

13.2.1. Produce ATP via cellular respiration at the cristae

14. Lysosomes

14.1. Structure:

14.1.1. Membrane-bound vesicles

14.2. Function:

14.2.1. digestion of macromolecules by lytic enzymes

14.2.2. Digestion of substances brought in the cell via endocytosis

14.2.3. Recycling worn out organelles