4. Golgi, Lysosome, Ribosome, Centrioles, Nucleus – Dr. Fathy Emad

Golgi apparatus , Lysosomes ,Ribosomes , Centrioles

1 / 10

By LM, Golgi apparatus:

b) Responsible for cytoplasmic basophilia.

a) Seen as negative Golgi image in protein secreting cells.

d) Appears as basophilic network of fibrils.

c) Specially stained with PAS.

2 / 10

1ry lysosomes:

a) Released by sER

d) Are heterogeneous vesicles.

b) Contain undigested material.

c) Are homogenous vesicles.

3 / 10

The cis face of Golgi apparatus:

b) Receives the transfer vesicles from rER.

a) Is the entry concave surface.

d) Facing the cell membrane.

c) From which the secretory vesicles bud off.

4 / 10

Golgi apparatus is formed of:

b) Parallel cisternae.

a) Flattened saccules.

d) Only one face.

c) Shelf like folds (cristae).

5 / 10

Trans face of Golgi apparatus:

b) Receives transfer vesicles.

d) Facing rER.

c) Gives secretory vesicles.

a) is the convex face.

6 / 10

The fate of secretory vesicles:

b) Remain inside the cell in the form of lysosomes.

a) Release their content outside the cell by endocytosis.

t. d) Accumulate within the cell containing undigested material.

c) Accumulate within the cells as lipofuscin pigmen

7 / 10

Concerning lysosomes:

b) Are released from rER.

a) Hydrolytic enzymes are synthesized in rER.

d) Lysosomes involved in digestion are primary lysosomes.

c) Newly released lysosomes are secondary lysosomes.

8 / 10

Ribosomes:

a) Cause cytoplasmic acidophilia.

c) Attached ribosomes form protein used by the cell.

b) Free ribosomes form protein used by the cell.

d) Formed of 2 large subunits.

9 / 10

Centrioles:

Share in the formation of microvilli.

Formed of 9 doublets of microtubules.

Formed of microfilaments.

Formed of 9 triplets of microtubules.

10 / 10

Golgi apparatus:

a) Is the digestive apparatus of the cell.

b) Is well develop in protein secreting cells.

c) Can divide.

d) Can be stained with H&E

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