Plant Structure Cellular organelles are embedded in the endoplasmic reticulum cristae cytosol microtubules endoplasmic reticulum cristae cytosol microtubules ANSWER DOWNLOAD EXAMIANS APP
Plant Structure The mitochondria were known in the nineteenth century to be osmotically active on the basis of evidence that mitochondria were derived from a symbiotic bacterium the mitochondrial matrix is hypertonic to the cellular cytoplasm mitochondria are surrounded by a semi permeable membrane the mitochondrial matrix is hypotonic to the cellular cytoplasm mitochondria were derived from a symbiotic bacterium the mitochondrial matrix is hypertonic to the cellular cytoplasm mitochondria are surrounded by a semi permeable membrane the mitochondrial matrix is hypotonic to the cellular cytoplasm ANSWER DOWNLOAD EXAMIANS APP
Plant Structure The composition of the inner mitochondrial membrane is most like that of some bacterial plasma membranes the outer mitochondrial membrane the nuclear membrane the cell's plasma membrane some bacterial plasma membranes the outer mitochondrial membrane the nuclear membrane the cell's plasma membrane ANSWER DOWNLOAD EXAMIANS APP
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 An artificial proton gradient across the inner mitochondrial membrane drives ATP synthesis in the absence of electron transport Electron transport in isolated mitochondria was shown to result in acidification of the medium 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 An artificial proton gradient across the inner mitochondrial membrane drives ATP synthesis in the absence of electron transport Electron transport in isolated mitochondria was shown to result in acidification of the medium 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 observations is not used as evidence to support the concept of endosymbiotic origin of chloroplasts and mitochondria? Both have their own ribosomes Both have their own DNA Both strongly resemble prokaryotes, especially in size Both can live and function independently of the cell Both have their own ribosomes Both have their own DNA Both strongly resemble prokaryotes, especially in size Both can live and function independently of the cell ANSWER DOWNLOAD EXAMIANS APP
Plant Structure Why do some redox reactions in cells result in the transfer of electrons from a reductant with a higher standard redox potential to an oxidant with a lower standard redox potential? Electrons always go from reductants with high redox potentials to oxidants with low redox potentials None of these The rules governing oxidation and reduction apply only in vitro, and not in vivo Redox potentials are defined under standard conditions, and cellular conditions are typically not standard conditions Electrons always go from reductants with high redox potentials to oxidants with low redox potentials None of these The rules governing oxidation and reduction apply only in vitro, and not in vivo Redox potentials are defined under standard conditions, and cellular conditions are typically not standard conditions ANSWER DOWNLOAD EXAMIANS APP
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