Plant Structure
Which is not true about a photon?

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

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

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

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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
Addition of dinitrophenol to isolated mitochondria was shown to inhibit electron transport, but had no effect on ATP synthesis
Addition of dinitrophenol to isolated mitochondria during electron transport was shown to inhibit acidification of the medium
An artificial proton gradient across the inner mitochondrial membrane drives ATP synthesis in the absence of electron transport

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