Plant Structure Which of the following experimental results does not support Mitchell's chemiosmosis theory? Addition of dinitrophenol to isolated mitochondria was shown to inhibit electron transport, but had no effect on ATP synthesis Electron transport in isolated mitochondria was shown to result in acidification of the medium An artificial proton gradient across the inner mitochondrial membrane drives ATP synthesis in the absence of electron transport Addition of dinitrophenol to isolated mitochondria during electron transport was shown to inhibit acidification of the medium Addition of dinitrophenol to isolated mitochondria was shown to inhibit electron transport, but had no effect on ATP synthesis Electron transport in isolated mitochondria was shown to result in acidification of the medium An artificial proton gradient across the inner mitochondrial membrane drives ATP synthesis in the absence of electron transport Addition of dinitrophenol to isolated mitochondria during electron transport was shown to inhibit acidification of the medium ANSWER DOWNLOAD EXAMIANS APP
Plant Structure Which of the following statements about the outer mitochondrial membrane is not true? The outer membrane contains porins The outer membrane is impermeable to hydrogen ions The outer membrane is about 50% lipid and 50% protein by weight The outer membrane is highly permeable to substances of small molecular weight The outer membrane contains porins The outer membrane is impermeable to hydrogen ions The outer membrane is about 50% lipid and 50% protein by weight The outer membrane is highly permeable to substances of small molecular weight ANSWER DOWNLOAD EXAMIANS APP
Plant Structure What is the source of free energy (ΔG) for moving protons out of mitochondria against their concentration and electrical gradients? The redox reactions of electron transport Creatine phosphate ATP Glycolysis The redox reactions of electron transport Creatine phosphate ATP Glycolysis ANSWER DOWNLOAD EXAMIANS APP
Plant Structure The cellular organelle associated with secretion is the golgi complex ribosome mitochondrion lysosome golgi complex ribosome mitochondrion lysosome ANSWER DOWNLOAD EXAMIANS APP
Plant Structure Which cell type is likely to have the most mitochondria? Fast-twitch muscle Adipose cells Liver cells Slow-twitch muscle Fast-twitch muscle Adipose cells Liver cells Slow-twitch muscle ANSWER DOWNLOAD EXAMIANS APP
Plant Structure Which of the following observations is not used as evidence to support the concept of endosymbiotic origin of chloroplasts and mitochondria? Both strongly resemble prokaryotes, especially in size Both can live and function independently of the cell Both have their own DNA Both have their own ribosomes Both strongly resemble prokaryotes, especially in size Both can live and function independently of the cell Both have their own DNA Both have their own ribosomes ANSWER DOWNLOAD EXAMIANS APP
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