MCQ
In $C_{4}$-pathway, the first product identified was
- A$3-PGA$
- ✓$OAA$
- C$2-PGA$
- D$1-3DPGA$
$(i)$ $C_{3}$ pathway Those plants in which the first product of $CO _{2}$ fixation is a $C_{3}$ acid $(PGA)$, i.e, the $C_{3}$ pathway $(ii)$ $C_{4}$ pathway Those plants in which the first product $C_{4}$ acid $(OAA)$, i.e,, the $C_{4}$ pathway
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$I.$ Human insulin is made-up of $51$ amino acidsarranged in two polyperptide chains.
$II.$ The two polypeptide chains are interconnected by two disulphide bridges.
$III.$ In mammals including humans, insulin is synthesised as a pro-hormone, which contains an extra stretch called the $C$ -peptide.
$IV.$ $C$ -peptide is not present in the mature insulin
Which of the statements given above are correct?