Chemistry - Biomolecules Question with Solution | TestHub

Ziegler catalyst $\to$ Titanium

Ziegler- Natta catalyst contains two parts – a transition metal compound and an organoaluminum compound.  Organoaluminum compounds contain bonds between aluminum and carbon atoms. Examples of Ziegler-Natta catalysts include ${\mathrm{TiCl}}_4+{\mathrm{Et}}_3\mathrm{Al}$ and ${\mathrm{TiCl}}_3+{\mathrm{AlEt}}_2\mathrm{Cl}$. So, if we want to write the chemical formula of one of the Ziegler-Natta catalysts then it can be represented as ${\mathrm{TiCl}}_4\mathrm{Al}\left({\mathrm{CH}}_3{)}_2\right({\mathrm{CH}}_2{)}_2\mathrm{Cl}$.

Blood pigment $\to$Iron

Haemoglobin: RBCs/erythrocytes play an important role in the transport of oxygen to various tissues. It is mainly due to the presence of an iron-containing, red-colored pigment called haemoglobin. The presence of haemoglobin gives RBCs the red colour.

Wilkinson catalyst$\to$Rhodium

Wilkinson's catalyst is usually obtained by treating rhodium$\left(\mathrm{III}\right)$ chloride hydrate with an excess of triphenylphosphine in refluxing ethanol. Triphenylphosphine serves as both a ligand and a two-electron reducing agent that oxidises itself from oxidation state $\left(\mathrm{III}\right)$ to$\left(\mathrm{V}\right)$.

Vitamin ${\mathrm{B}}_{12}$ $\to$Cobalt

Cobalt is a major part of the structure of vitamin $\mathrm{B}12$. Therefore, if you get enough vitamin $\mathrm{B}12$, you will also get enough cobalt. Adults need about $0.0015 \mathrm{mg}$ ($1.5$ micrograms) of vitamin $\mathrm{B}12$ a day.