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Answer: <u>Option B; 100</u>
Explanation: If the cell is placed in a solution with 75 ppm calcium ions, then the cell will die, because water will enter the cells and they can burst. 75 ppm is quite a hypotonic solution for survival of bacterial cells. Same is the case will 125 ppm, here the cells will die because of dehydration. The increased solute concentration will make the bacterial cells to loose water and this principle is used in preservation.
100 ppm will provide the most stable environment because the water movement will occur at a same rate and the processes of the cell can proceed at required rate.
Answer:
Cytoskeleton
Explanation:
It provide mechanical support that enables cells to carry out function like division and movement
Because the greenhouse gases, such as water vapor, carbon dioxide, methane and etc.,
move in and out of the atmosphere. They trap some of the heat radiated
out from the Earth that would normally move out into space. And without it<span> this planet would be really cold.</span>
Answer:
Electron transport chain
Explanation:
The NADH and FADH2 produced throughout glycolysis and Kreb's cycle are converted into ATP in the electron transport chain with oxygen as the terminal electron acceptor.
The following is a concept map of all NADH and FADH2 produced during cellular respiration.
- In each glycolytic pathway, glyceraldehyde 3-phosphate dehydrogenase produces 1 molecules of NADH as a result of reduction of NAD+.
- Pyruvate dehydrogenase converts pyruvate to Acetyl CoA producing 1 molecule of NADH per pyruvate oxidized.
- In Kreb's cycle, isocitrate dehydrogenase, alpha-ketoglutarate dehydrogenase, and malate dehydrogenase reactions produce 1 molecule of NADH each. Furthermore, succinate dehydrogenase reaction produces a single molecule of FADH2 per FAD reduced.
- Since, we began with 2 molecules of glyceraldehyde 3-phosphate, we multiply the above figures by 2 and get a total of 10 NADH and 2 FADH2.
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