Which of the following is a copper containing protein in electron transport chain?
Correct answer: C. Plastocyanin
- A. Plastoquinone
- B. Cytochrome - C
- C. Plastocyanin
- D. Ferredoxin
Explanation
It serves as an electron transfer agent between the cytochrome complex which follows Photosystem II and the entry point to Photosystem I of the non-cyclic electron transfer process. The electron transport chain is a series of electron transporters embedded in the inner mitochondrial membrane that shuttles electrons from NADH and FADH2 to molecular oxygen. In the process, protons are pumped from the mitochondrial matrix to the intermembrane space, and oxygen is reduced to form water.
This question appeared on the PMC National MDCAT 2020 paper, which you can sit online with every answer explained.
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About Plant Nutrition and Transport
Plants require macronutrients and micronutrients for growth, and mineral deficiencies produce recognizable symptoms. Transport involves water and minerals through xylem by transpiration pull, cohesion and adhesion, while phloem translocates sugars from sources to sinks. Root pressure and transpiration are distinct mechanisms.
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