Answer:
Oxygen would be played a key role in evolution of complex organisms because this molecule is required to efficiently produce chemical energy during cellular respiration
Explanation:
Chloroplasts originated from endosymbiotic cyanobacteria 1,500 million years (mya) ago. Like chloroplasts, mitochondria originated from cyanobacteria, and also approximately at the same time. Mitochondria are organelles capable of generating energy by burning oxygen during cellular respiration (aerobic respiration). During this period (1,500 mya), complex cells became able to efficiently produce energy by using oxygen in aerobic reactions, which can be attributed to the emergence of mitochondria. Interestingly, it has been shown that during the next 500 mya, different groups of organisms composed of more than 50 different cell types evolved (including algae, fungi and early animals). Therefore, it is possible to hypothesize oxygen would be a critical molecule without which complex organisms couldn't evolve.
Proteins
The internal and external
regulators are mostly composed of proteins. These regulators plays a role in
many cells, they control, regulate and support the process in which involves
the cell cycle. The cell cycle is where each cell undergoes cell division,
either mitosis or meiosis. Thus, these regulators react to their designated
areas, internal regulators responds to the internal stimuli and external
regulators responds to the external stimuli. These regulators help and support
the cell cycle as much as not to cause any irregularities during the process.
Answer:
The process by which green plants and some other organisms in the presence of sunlight to synthesize nutrients from carbon dioxide and water is called photosynthesis.
About 1027 kg/m^3. <span>The density of pure water is </span><span>1000 kg/m3</span><span>. Ocean water is more dense because of the salt in it. Density of ocean water at the sea surface is </span><span>about 1027 kg/m3</span><span>. There are two main factors that make ocean water more or less dense than </span><span>about 1027 kg/m3</span><span>: the temperature of the water and the salinity of the water</span>
An example could be office personnels,
1. The nucleus could be the CEO of the company
2. The chromosomes could be the knowledge workers of the company or the managers since these are the people that can shape the company and aid the formation of culture and organization -assisting the CEO.
3. Mitochrondria could be the workers since they power up the company, without them there would be no team, firm or the company itself.
4. Golgi body can be the secretaries or the assisting managers which supports, checks, modifies and confirms the many tasks before it is passed into the nucleus and other organelles, they also dissiminate information.
