Monday, November 30, 2020
Mitochondrial Health

class 11 biology Chapter 8 Cell The unit of life part 4 | Mitochondria and Plastids| NCERT

In this topic of Mitochondria and Plastids we will cover detailed structure of mitochondria and plastids, chloroplast, and types of plastids. What is power house of cell, aerobic respiration, functions of chloroplast, Chromoplasts and Leucoplasts. Location of thalokoids, chlorophyll pigments, types of DNA present in mitochondria and choloplast.

Mitochondria is double-membrane-bound organelle found in most eukaryotic organisms. The space between the outer membrane and inner membrane called intermembrane space or perimitochondrial space which is completely different from matrix of mitochondria.

Circular DNA present in matrix of mitochondria, and enzyme cytochrome c present in intermembrane space. After aerobic respiration energy generates in the form of ATP. Cytochrome c enzyme present in intermembrane space help in cell apoptosis.

Plastids are double-membrane-bound organelles present in cytoplasm of plants, algae and eukaryotic cells. Plastids functions includes manufacturing and storing of food. It was first discovered by Haekel.

In chloroplast photosynthesis occurs to produce sugar and oxygen.
Chloroplasts are biconvex shaped double membraned cell organelle present within the mesophyll of the plant cell. They are the sites for synthesizing food by the process of photosynthesis.

Leucoplasts are the non-pigmented organelles which are colorless. Leucoplasts are usually present in most of the non-photosynthetic parts of the plant like roots. Main function is storage of starches, lipids, and proteins depending on the need of the plants.

Leucoplasts are of three types: Amyloplasts store and synthesize starch. Proteinoplasts helps in storing the proteins and Elaioplasts stores fats and oils.


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