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Read the given statements. (i) Mg^(2+)...

Read the given statements.
(i) `Mg^(2+)` is an activator for ribulose bisphosphate carboxylase-oxygenase.
(ii) Micronutrients are required in large quantities.
(iii) `Zn^(2+)` is an activator of alcohol dehydrogenase
(iv) Phosphorous is a central metal ion of the chlorophyll molecule.
Identify the true and false statements.

A

(i) - True (ii) - False (iii) - False (iv) -True

B

(i) - True (ii) - True (iii) - False (iv) -False

C

(i) - True (ii) - False (iii) - True (iv) -False

D

(i) - True (ii) - False (iii) - True (iv) -True

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to evaluate each statement one by one and determine whether they are true or false. ### Step-by-Step Solution: 1. **Statement (i): `Mg^(2+)` is an activator for ribulose bisphosphate carboxylase-oxygenase.** - **Analysis:** Magnesium ions (Mg²⁺) are indeed known to be activators for the enzyme ribulose bisphosphate carboxylase-oxygenase (commonly known as Rubisco). This enzyme is crucial in the Calvin cycle of photosynthesis. - **Conclusion:** This statement is **True**. 2. **Statement (ii): Micronutrients are required in large quantities.** - **Analysis:** The term "micronutrients" refers to nutrients that plants require in very small amounts (trace amounts). They are not needed in large quantities; in fact, excessive amounts can lead to toxicity. - **Conclusion:** This statement is **False**. 3. **Statement (iii): `Zn^(2+)` is an activator of alcohol dehydrogenase.** - **Analysis:** Zinc ions (Zn²⁺) are known to act as activators for the enzyme alcohol dehydrogenase, which is involved in the metabolism of alcohol in both plants and animals. - **Conclusion:** This statement is **True**. 4. **Statement (iv): Phosphorous is a central metal ion of the chlorophyll molecule.** - **Analysis:** In chlorophyll, the central metal ion is actually magnesium (Mg), not phosphorus (P). Phosphorus is important for other biological functions but is not the central atom in chlorophyll. - **Conclusion:** This statement is **False**. ### Summary of Statements: - Statement (i): True - Statement (ii): False - Statement (iii): True - Statement (iv): False ### Final Answer: The true and false statements are: - True, False, True, False
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