Answer:
Mitochondria originated when an ameoba like organism engulfed an aerobic proteobacterium capable of cellular respiration.
Explanation:
Endosymbiotic Theory:
- The endosymbiotic theory explains the origin of eukaryotic cells and eukaryotic organelles, particularly the chloroplast and mitochondria.
- According to this theory, a prokaryotic ameoba like organism increased in size and gradually developed infoldings of its plasma membrane. These infoldings gradually developed into an endomembrane that enclosed the genetic material and nucleus.
- This cell then engulfed a proteobacterium capable of cellular respiration. Over time, this cell thrived as oxygen increased in the atmosphere of the Earth. The proteobacterium survived as an endosymbiont and later evolved into mitochondria.
Answer:
Option-C
Explanation:
Apoptosis is a genetically controlled process taking place in the multicellular organisms which is marked with the self-destruction called or programmed cell death.
During apoptosis various physiological and morphological changes take place in the cell such as fragmentation of nuclear DNA, nucleus, shrinkage of cell and mRNA decay.
Since apoptotic cell undergoes cell death which is genetically controlled or programmed by the genes, therefore, apoptosis is known as the programmed cell death.
Thus, Option-C is the correct answer.
The snakes nutrition is carnivores based. The frogs nutrition is also carnivores based (feeds on other animals), but in this situation the snake is the predator and the frog is the prey
Answer:
NASA is a U.S goverment acengy. It is responsible for sciecne and technology realted to air and space.
Explanation:
NASA opened for on October ,19.58. The agency was created oversee U.S space exploritation and areonautics research.
NASA stand for (National Aeronautics and Space Administration.)
Answer: A is the rib/ rib cage with the lung son the inside
Explanation: I don’t know what the other ones are