CBSE course CBSE Class 9
Share
Notifications

View all notifications

Write Short Note on the Following : (A) Golgi Apparatus (B) Mitochondria - Science

Login
Create free account


      Forgot password?
ConceptCell Organelles

Question

Write short note on the following :

(a) Golgi apparatus

(b) Mitochondria

Solution

(a) Golgi apparatus:

  1. Golgi apparatus consists of a set of membrane-bounded, fluid-filled vesicles, vacuoles, and flattened cisternae.
  2. Cisternae are stacked together in parallel rows. They are formed at one end of the stack, called cis face of Golgi, and are budded off as vesicles at the other face, called trans face of Golgi.
  3. Golgi apparatus arises from the membrane of smooth endoplasmic reticulum.
  4. Golgi saccules (cisternae at cis and trans face) are constantly renewed. Distal saccules (trans face) disappear after vesicle formation.
  5. The main function of Golgi apparatus is to secrete vacuoles or secretory vesicles that contain cellular secretions such as enzymes, proteins, and cellulose.

(b) Mitochondria:

  1. Mitochondria are tiny bodies of varying shapes and sizes distributed in the cytoplasm.
  2. They are bounded by a double membrane envelope.
  3. The inner membrane is folded several times forming cristae. Each cristae are studded with small round bodies known as F1 paricles or oxysomes.
  4. The interior cavity of the mitochondria is filled with a proteinaceous (gel-like) matrix which contains a few small-sized ribosomes, a circular DNA molecule and phosphate granules.
  5. The main function of mitochondria is to synthesise ATP (energy-rich molecule) and provide energy to the cell via cellular respiration; hence, they are called as powerhouses of the cell.
  Is there an error in this question or solution?

APPEARS IN

 P S Verma and V K Agarwal Solution for Class 9 Biology - Science Part 3 (2016 to Current)
Chapter 2: The Fundamental Unit of Life : Cell
Long Questions Answer ( Carrying 5 Marks) | Q: 4 | Page no. 119

Video TutorialsVIEW ALL [1]

Solution Write Short Note on the Following : (A) Golgi Apparatus (B) Mitochondria Concept: Cell Organelles.
S
View in app×