Plant Structure
Any system that is not at equilibrium

is thermodynamically unstable, although it may be kinetically stable
requires an enzyme to reach equilibrium
is kinetically unstable, although it may be thermodynamically stable
is rushing toward equilibrium at a very rapid rate

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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 DNA
Both strongly resemble prokaryotes, especially in size
Both can live and function independently of the cell
Both have their own ribosomes

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Plant Structure
Which is not true about a photon?

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

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Plant Structure
Which of the following statements about the outer mitochondrial membrane is not true?

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 is impermeable to hydrogen ions
The outer membrane contains porins

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