Q26 / 200 · NEET 2003 · Botany

The major role of minor elements inside living organisms is to act as:

  • Correct answer
    A
    co-factors of enzymes
  • B
    building blocks of important amino acids
  • C
    constituent of hormones
  • D
    binder of cell structure

Solution

Trace elements function primarily as catalysts in enzyme systems; some metallic ions, such as iron and copper, participate in oxidationreduction reactions in energy metabolism. Iron, as a constituent of haemoglobin and myoglobin, also plays a vital role in the transport of oxygen. Related Theory Essential trace elements of the human body include zinc ( $\mathrm{Z} n)$, copper (Cu), selenium (Se), chromium (Cr), cobalt (Co). lodine (I). manganese (Mn), and molybdenum (Mo).

Hence, the correct answer is option: 'A'.

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