Answer:
The correct answer will be option- C.
Explanation:
The endo-symbiotic theory was given by Lynn Margilus in 1967 which explained the origin of complex eukaryote from simple prokaryotes.
The endosymbiotic theory stated that a eukaryote became complex after the ingestion of prokaryotic cells which became permanent which proved useful to each other.
The presence of mitochondria is evidence supporting the endosymbiosis which is thought to have evolved from a prokaryotic chemosynthetic bacteria in past.
Thus, option- C is the correct answer.
a hazard is something that could cause damage or harm to someone or something and a risk is the chance that a hazard will cause damage or harm
Answer:
Light energy enters the process of photosynthesis when pigments absorb the light. In plants, pigment molecules absorb only visible light for photosynthesis. The visible light seen by humans as white light actually exists in a rainbow of colors. Certain objects, such as a prism or a drop of water, disperse white light to reveal these colors to the human eye. The visible light portion of the electromagnetic spectrum is perceived by the human eye as a rainbow of colors, with violet and blue having shorter wavelengths and, therefore, higher energy. At the other end of the spectrum toward red, the wavelengths are longer and have lower energy.
Answer:
In the mentioned case, both the cells will start to perform replication of their DNA. In the case of G0, that is, the stationary phase, the mammalian cell can pass the restriction point with the supplementation of extracellular proliferation signal. While in the case of G1, which actually does not require any kind of external proliferation signal, as once the cell is in G1 phase, it is ready to go get the next phase. However, both the mammalian cells will cease or halt at G2 checkpoint.
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