Biological Pigments

Fetal haemoglobin has an $\mathrm{X}$ affinity for oxygen than that of the mother’s haemoglobin during gestation. Then $\mathrm{X}$ is?

What is fetal haemoglobin?

What is porphyrin in haemoglobin?

What are porphyrins and write its function?

Define cytochromes.

Select whether the following statement is True or False:

Myoglobin reacts with carbon monoxide in the same way as haemoglobin, which further reduces the oxygen supply to cells. The presence of  $0.2\%$ of carbon monoxide in the air causes serious health problems while concentrations above $0.5\%$ can be fatal.

Expain carbon monoxide poisoning.

What is the role of chlorophyll in photosynthesis?

Chlorophyll is

Which of the following is present in cytochrome oxidase?

The colouring pigment to the skin and hair is 

Write a short note on melanin, a biological pigment.

Which has both $\mathrm{Fe}$ and $\mathrm{Cu}$ as a prosthetic group?

What are cytochromes? 

Answer in one sentence: Draw structure of BHT.

Answer in one sentence: Write molecular formula of Butylated hydroxytoluene.

The colour of human skin is due to which pigment?

Which is the green-coloured pigment that a plant uses to absorb light energy from the Sun? 

What gives leaves a green colour?  
 

The green substance in leaves is called _____.