COMMON MITOCHONDRIA AND CHLOROPLAST

Question 1

What are common feature of chloroplast and mitochondria ?

Answer 1

1. Both divide by binary fission
2. Both are called as the semi autonomous body
3. Both are called cell within the cell

Question 2

Why are they known as cell within the cell ?

Answer 2

It is because they have their own DNA and ribosomes therefore they can synthesis their own proteins but some of their proteins are dependent to the nuclear DNA and cytoplasm.

Question 3

What is the endo symbiont theory ?

Answer 3

This theory is applicable to both chloroplast and mitochondria

According to this theory both the mitochondria and chloroplast are the bacterial cell which get trapped by the eukaryotic cell symbiotically.

Question 4

What are the evidences to this theory ?

Answer 4

1. Present of the porins on outer membrane
2. 70s ribosomes are present
3. Double stranded circular DNA is present
4. They reproduce through binary fission