Plant Structure
The composition of the inner mitochondrial membrane is most like that of

the outer mitochondrial membrane
the nuclear membrane
the cell's plasma membrane
some bacterial plasma membranes

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Plant Structure
Which of the following statements about mitochondrial proteins is true?

Mitochondrial proteins arise from other mitochondrial proteins
All mitochondrial proteins are imported from the cytoplasm
Some mitochondrial proteins are coded for and synthesized in the mitochondria and others
All mitochondrial proteins are coded for and synthesized in the mitochondria

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Plant Structure
Which is not true about a photon?

It is trapped by photosynthetic unit
It donates electron to reduce carbon dioxide to glucose
The shorter the wavelength, the greater the energy of the photons
It is a packet of light energy

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Plant Structure
The mitochondria were known in the nineteenth century to be osmotically active on the basis of evidence that

the mitochondrial matrix is hypotonic to the cellular cytoplasm
mitochondria were derived from a symbiotic bacterium
mitochondria are surrounded by a semi permeable membrane
the mitochondrial matrix is hypertonic to the cellular cytoplasm

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Plant Structure
Which of the following experimental results does not support Mitchell's chemiosmosis theory?

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

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