What is the evidence of endosymbiosis?
There is broad evidence to show that mitochondria and plastids arose from bacteria and one of the strongest arguments to support the endosymbiotic theory is that both mitochondria and plastids contain DNA that is different from that of the cell nucleus and that they have their own protein biosynthesis machinery.
What evidence is there to support the Endosymbiotic theory explain three evidences?
The first piece of evidence that needed to be found to support the endosymbiotic hypothesis was whether or not mitochondria and chloroplasts have their own DNA and if this DNA is similar to bacterial DNA. This was later proven to be true for DNA, RNA, ribosomes, chlorophyll (for chloroplasts), and protein synthesis.
Which of the following is not evidence of the Endosymbiotic theory?
“The exterior structure similar to bacterial cell walls” IS NOT an evidence in favour of the endosymbiotic theory. Both mitochondria and chloroplasts are double membrane bound.
What is the Endosymbiotic theory simplified?
(evolutionary biology) A theory suggesting that the organelles such as mitochondria and chloroplasts within the eukaryotic cell came about as a result of the early endosymbiosis between prokaryotic endosymbionts and eukaryotic host cell.
Why do you think a mitochondrion has 2 membranes?
The inner membrane folds over many times and creates layered structures called cristae. The folding of the inner membrane increases the surface area inside the organelle. Since many of the chemical reactions happen on the inner membrane, the increased surface area creates more space for reactions to occur.
What is nucleus of a cell class 8?
The nucleus is a double-membraned organelle that contains the genetic material and other instructions required for cellular processes. It is exclusively found in eukaryotic cells and is also one of the largest organelles.
What happens if nucleus is removed from a cell?
If the nucleus is removed from the cell then the cell will not be able to function properly, it will not be able to grow. All the metabolic functioning of the cell will stop. Without nucleus the cell will lose its control. It can not carry out cellular reproduction.