why do plastid and mitochondria have double membrane?
define centriole and centrosome
pls no copy from Google
Answers
1.Why do plastid and mitochondria have a double membrane?
Ans:There are membrane bound compartments within eukaryotic cells. Many of them are surrounded by a single lipid bilayer. ... It's no surprise that mitochondria and chloroplast have a double membrane because their ancestral bacterial cells also had double membranes.
Centroile
Ans: A small, cylindrical cell organelle, seen near the nucleus in the cytoplasm of most eukaryotic cells, that divides in perpendicular fashion during mitosis, the new pair of centrioles moving ahead of the spindle to opposite poles of the cell as the cell divides: identical in internal structure to a basal body.
Centrosome
Ans:In cell biology, the centrosome (Latin centrum 'center' + Greek sōma 'body') is an organelle that serves as the main microtubule organizing center (MTOC) of the animal cell, as well as a regulator of cell-cycle progression. The centrosome is thought to have evolved only in the metazoan lineage of eukaryotic cells.
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Answer:
Part of this is because they both rely on Electron Transport Chains (ETC) to perform their tasks. In the case of the mitochondria, the ETC is found in the inner membrane. It essentially functions to synthesize ATP. ... The double membrane structure is necessary in both cases to inform the function of the organelle.
Centriole- a small, cylindrical cell organelle, seen near the nucleus in the cytoplasm of most eukaryotic cells, that divides in perpendicular fashion during mitosis, the new pair of centrioles moving ahead of the spindle to opposite poles of the cell as the cell divides: identical in internal structure to a basal body.
Centrosome- A centrosome is a cellular structure involved in the process of cell division. ... Proteins called microtubules assemble into a spindle between the two centrosomes and help separate the replicated chromosomes into the daughter cells.