Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 51.5, Problem 1R
Summary Introduction
To review:
The parts of mammalian kidney tissues where a higher, lower, and intermediate concentration of mitochondria are found and reason for presence.
Introduction:
The mitochondria are called the powerhouse of the cell as it helps in generation of adenosine triphosphate (ATP). This energy is used in various cellular processes of the body. The active transport which may be defined as the transport of molecules against the concentration gradient requires energy.
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Life: The Science of Biology
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- In which step is the cell “paying” the energy cost to transport glucose against its concentration gradient? Explainyour answerarrow_forwardList the protein complexes in the mitochondrial ETC anddescribe their functions.arrow_forwardBoth H+ and Ca2+ are ions that move through thecytosol. Why is the movement of H+ ions so much fasterthan that of Ca2+ ions? How do you suppose the speed ofthese two ions would be affected by freezing the solution?Would you expect them to move faster or slower? Explainyour answer.arrow_forward
- What is the approximate P/O ratio that can be expected if intact mitochondria are incubated in the presence of oxygen, along with added succinate?arrow_forwardGive typed full explanation of all four questions otherwise leave itarrow_forwardDraw a simple diagram of a mitochondrion and identify its structural features.arrow_forward
- Give an account of the structure of mitochondria .arrow_forwardImagine that you develop a procedure to measure the pH of in the matrix and the intermembrane space of a mitochondrion. What pattern of pH would you see? The pH in the intermembrane space will contain more H+ and have a lower pH compared to the matrix. The pH in the intermembrane space will contain more H+ and have a higher pH compared to the matrix. The pH within the matrix will contain more H+ and have a lower pH compared to the intermembrane space. The pH within the matrix will contain more H+ and have a higher pH compared to the intermembrane space.arrow_forwardWhat is mitochondria and give its suitable examples?arrow_forward
- Using the concepts of endo- and exo-cytosis explain the origin of the mitochondria. Include a drawingarrow_forwardImagine a hypothetical cell with a higher concentration of glucose inside the cell thanoutside. Answer the following questions about this cell, assuming all transport acrossthe membrane is passive, not active.a. Can the glucose simply diffuse across the cell membrane? Why or why not?b. If there are glucose transport proteins in the cell membrane, which way wouldglucose flow- into or out of the cell? Explain your answer.c. If the concentration of glucose was equal inside and outside of the cell, do you thinkthere would be a net flow of glucose across the cell membrane in one direction orthe other? Explain your answer.arrow_forwarddetermine kcat and then draw the following graph.arrow_forward
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