Dave-Jackie-CR+essays

26. Tom notices that he is a lot more short of breath after he finishes a 200 meter sprint than when he jogs for 3 miles. He is confused because he feels as if he should feel more tired when he runs for a much longer distance. Explain to him why it makes sense that he s indeed more short of breath after running a sprint than jogging. Make sure to explain it using your scientific knowledge of cellulat respiration.

You lose more energy while sprinting because you are no at a steady pace. Once in an unsteady pace, you use up more energy to get into a steady pace. Unsteady conditions often mean lack of oxygen. During cellular respiration, when you have a lack of oxygen, instead of going through cellular respirations three steps, you go through fermentation. Fermentation takes a lot longer than cellular respirations three steps, because there is no oxygen involved.

27.﻿ a scientist isolates mitochndria from human cells and places them in an acid solution. the acid penetrates the intermembranous space of the mitochondria. the scientist then noticeds that the mitochondria start making ATP despite the fact that he is not providing any glucose for them. how is it possible that the mitochondria are still making ATP? (think back to what an acid is, what it releases when placed in a solution and why this would make the mitochondria synthesize ATP).

the inner membrane is highly folded and has a large surface area that fits in a small space. the inner membrane produces energy-storing molecules. those energy-storing molecules store already broken down energy. when the acid is put into the mitochondria it doesnt stop ATP producton because there is energy stored for later use, (in this case, when acid is inserted.)

28. genetic testing reveals that baby helen has a defective gene that results in the defective production of one f the proteins in the electron transport chain. because of faulty instructions in her DNA, one of the proteins in her ETC is misshapen, and therefore it cannot perform its function as efficiently.baby helen is "failing to thrive" as she is having a hard time gaining weight and reaching developmental milestones. using your knowledge of the ETC and its role in making ATP, explain why you think baby helen is having the problem described above.

ATP is made, then they are taken to the ETC. the ETC then takes the energy from ATP and brings it to an electron acceptor. that electron acceptor then gives energy to other cells in the body. if the ETC is shut down the ATP cant be distributed throughout the body for growth and devlopment.

29. compare the basic transformatin of energy during photosynthesis and cellular respiration.

the energy goes to the ETC in both.

30. describe the role of ATP in biochemical reactions. what is ATP used for in your cells? how d yourcells get energy out of a molecule of ATP? how is ATP recharged?

atp is used for energy in your cells. cells get energy from the breaking down of ATP in the cells. ATP is recharged by going through cellular respiration process.