Question

Some functions of a nutrient element are given below.
(i) Important constituent of proteins involved in ETS
(ii) Activator of catalase
(iii) Important constituent of cytochrome
(iv) Essential for chlorophyll synthesis
The concerned nutrient is ______.

• A. Cu
• B. Fe
• C. Ca
• D. Mo

Answer 1

The correct option is B Fe

Regulation of enzyme activity thus plays a key role in governing cell behavior. The cell to regulate not only the amounts but also the activities of its protein constituents. Regulation of the activities of some of the proteins involved in transcription. Frequently, protein kinases function as components of signal transduction plays important role Fe. catalase is a common enzyme found in nearly all living organisms exposed to oxygen (such as bacteria, plants, and animals). It catalyzes the decomposition of hydrogen peroxide to water and oxygen. ... It contains four iron-containing heme groups that allow the enzyme to react with the hydrogen peroxide. Cytochromes are, thus, capable of performing electron transfer reactions and catalysis by reduction or oxidation of their heme iron. Yellow leaf margins may also appear.Iron is necessary for many enzyme functions and as a catalyst for the synthesisof chlorophyll. It is essentialfor the young growing parts of plants. Manganese is involvedin enzyme activity for photosynthesis, respiration, and nitrogen metabolism. So, the correct answer is "Fe".