5. a) State the function of co-factors in cell metabolism. (1 mark)

b) Give one example of a metallic co-factor. (1 mark)

6. Name two mineral elements that are necessary in the synthesis of chlorophyll. (2 marks)

7. What is the role of the vascular bundles in plant nutrition? (3 marks)

8. Describe what happens during the light stage of photosynthesis. (3 marks)



Answer :

Final answer:

Cofactors are crucial in cell metabolism, metallic cofactors like Iron play a role. Magnesium and Nitrogen are important for chlorophyll synthesis, while vascular bundles aid in nutrient transport within plants. The light stage of photosynthesis involves light energy capture, water splitting, and ATP/NADPH production.


Explanation:

Cofactors are essential in cell metabolism as they assist in enzymatic reactions. For example, they help in the conversion of substrates into end-products. An example of a metallic cofactor is Iron.

Two mineral elements necessary in the synthesis of chlorophyll are Magnesium and Nitrogen. Vascular bundles in plants play a role in nutrient transport, carrying water and nutrients acquired by roots to different parts of the plant.

The light stage of photosynthesis involves capturing light energy by chlorophyll, splitting water molecules, and producing ATP and NADPH, which are used in the Calvin cycle to synthesize sugars.


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