Who am I ?
a. ATP producing factory – Mitochondria
b. Single layered, maintaining cellular osmotic pressure – Plasma membrane/Cell membrane
c. Supporting the cell with a body resembling a net – Endoplasmic Reticulum (ER)
d. Chemical factory of the cell – Golgi Complex
e. Leaves are green because of me – Chloroplast
Give functions.
a. Plasma membrane
It is a thin, fragile and elastic covering that separates the cell components from outer environment. Plasma membrane is said to be a selectively permeable membrane as it allows some substances to enter the cell, while prevents other substances
b. Cytoplasm
Cytoplasm is the fluid between plasma membrane and nucleus. It is a moving, sticky
substance. Many cell organelles are suspended in cytoplasm. Cytoplasm is the medium for
cellular chemical reactions. The part of cytoplasm other than organelles is the cytosol.
Cytosol stores vital substances like amino acids,glucose, vitamins, etc.
c. Lysosome
Lysosomes are simple, single membrane bound sacs,filled with digestive enzymes.
Functions
1. Immune system – It destroys viruses and bacteria that attack the cell.
2. Demolition squads – It is destroys worn out cellular organelles and organic debris. (Autolysis)
3. Suicide Bags – When a cell becomes old or is damaged,lysosomes burst and enzymes digest their own cells.
4. During starvation, lysosomes digest stored proteins,fats.
d. Vacuole
Vacuoles are the storage sacs for solid or liquid contents.They don’t have any typical shape or size. The structure of the vacuole changes according to the need of the cell. Vacuole is bound by single membrane.
Functions
1. To maintain the osmotic pressure of the cell.
2. To store metabolic byproducts and end products. (Glycogen,proteins, water etc).
3. In animal cell, they store waste products and food, while in amoeba it stores food before digestion.
4. In plant cell, vacuoles are full of cell sap and provide turgidity, rigidity to them.
