Tabulate any eight differences between C $_{3}$ and C $_{4}$ cycles.

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Solution

C $_{3}$ plants C $_{4}$ plants
This pathway takes place in all the plants. This pathway occurs only in the C $_{4}$ plants.
The first stable product is three carbon is PGA. The first stable product is four carbon is OAA.
The carboxylase enzyme is RuBisCo. The carboxylase enzyme is RuBisCo and PEP carboxylase.
The primary acceptor is RUBP. The primary acceptor is PEP.
Kranz anatomy is not present. Kranz anatomy is present.
Oxygen has inhibitory effects. There are no inhibitory effects of oxygen.
Low concentration of carbon dioxide lowers the efficiency. The concentration of carbon dioxide will have no effect on the efficiency.
One molecule of CO $_{2}$ is fixed which requires 3 ATP and 2 NADH. One molecule of CO $_{2}$ is fixed which requires 5 ATP and 3 NADH.

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C $_{3}$ plants	C $_{4}$ plants
This pathway takes place in all the plants.	This pathway occurs only in the C $_{4}$ plants.
The first stable product is three carbon is PGA.	The first stable product is four carbon is OAA.
The carboxylase enzyme is RuBisCo.	The carboxylase enzyme is RuBisCo and PEP carboxylase.
The primary acceptor is RUBP.	The primary acceptor is PEP.
Kranz anatomy is not present.	Kranz anatomy is present.
Oxygen has inhibitory effects.	There are no inhibitory effects of oxygen.
Low concentration of carbon dioxide lowers the efficiency.	The concentration of carbon dioxide will have no effect on the efficiency.
One molecule of CO $_{2}$ is fixed which requires 3 ATP and 2 NADH.	One molecule of CO $_{2}$ is fixed which requires 5 ATP and 3 NADH.