Match the following columns correctly:
Column $I$ Column $II$
$(a)$ Manganese $(p)$ For $O_2$ evolution
$(b)$ Chlorine $(q)$ Required for thyroid gland development
$(c)$ Phosphorus $(r)$ High concentration in mitochondria
$(d)$ Iodine $(s)$ Component of nucleic acids

  • A
    $(a-p), (b-q), (c-r), (d-s)$
  • B
    $(a-p), (b-r), (c-q), (d-s)$
  • C
    $(a-s), (b-q), (c-r), (d-p)$
  • D
    $(a-r), (b-p), (c-s), (d-q)$

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$A$ farmer adds/supplies $Na, Ca, Mg$ and $Fe$ regularly to his field and yet he observes that the plants show deficiency of $Ca, Mg$ and $Fe$. Give a valid reason and suggest a way to help the farmer improve the growth of plants.

Difficult
View Solution

Select the mismatch.

Select the correct option:
$(1)$ During $transamination$ / $reductive$ $amination$,an amino group is transferred from one amino acid to the keto group of a keto acid.
$(2)$ $Azotobacter$ / $Clostridium$ are free-living bacteria.

Analogy type questions:
$(1)$ Nitrogenase : Oxygen sensitive :: Leghaemoglobin : ........
$(2)$ Microbe on roots of Alnus : Frankia :: Roots of leguminous plants : Rhizobium :: Denitrification : Pseudomonas :: Biological nitrogen fixation : ........

Select the correct match for $X$ and $Y$.
Column $X$Column $Y$
$(1)$ Magnesium$(P)$ Blood clotting
$(2)$ Molybdenum$(Q)$ Constituent of cysteine amino acid
$(3)$ Calcium$(R)$ Essential for nitrogen fixation
$(4)$ Sulphur$(S)$ Activation of enzymes

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