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A: Eukaryotes are organisms whose cells contain a nucleus and other membrane-bound organelles.
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- DRAW IT The graph here showsthe pH difference across theinner mitochondrial membraneover time in an actively respiringcell. At the time indicated by thevertical arrow, a metabolic poisonis added that specifically andcompletely inhibits all function ofmitochondrial ATP synthase. Drawwhat you would expect to see forthe rest of the graphed line, andexplain your graph.SCIENTIFIC INQUIRY In the 1930s, some physiciansprescribed low doses of a compound called dinitrophenol(DNP) to help patients lose weight. This unsafe method wasabandoned after some patients died. DNP uncouples thechemiosmotic machinery by making the lipid bilayer of theinner mitochondrial membrane leaky to H+. Explain howthis could cause weight loss and death.The proton motive force is the result ofa. ATP synthase transporting protons during ATP synthesisb. an electron gradient between the matrix and the intermembranespace of a mitochondrionc. a proton gradient between the matrix and intermembrane space ofa mitochondriond. a buildup of negatively charged ions
- where is most of the ATP in eukaryotic cellular aerobic respiration is produced ? (a) mitochondrial matrix (b) mitochondrial outer membrane (c) mitochondrial intermembrane space (d) nucleus (e) cytosolLuckily, protons (a.k.a. hydrogen ions or H+) are small enough to passively go right through a membrane, otherwise mitochondria would have to work too hard to regenerate ATP! True or False?Which of the following metabolic processes can occur withouta net influx of energy from some other process?(A) ADP +~P i S ATP + H2O(B) C6H12O6 + 6 O2 S 6 CO2 + 6 H2O(C) 6 CO2 + 6 H2O S C6H12O6 + 6 O2(D) Amino acids S Protein
- Describe the reaction between electrons, H1, and oxygen at the fi nal step of electron transport.Which of the following phospholipids is a component of inner mitochondrial membrane?a) Plasmologenb) Cephalinc) Lecithind) CardiolipinATP generationinvolves electron transport chains and the enzyme ATPsynthase, which are embedded in the mitochondrion’s______ membrane.