Question

Match the columns:

$a$	Biological pigments	$1.$	Sodium chloride
$b$	Chemical messengers	$2.$	Steroids
$c$	Important constituent of blood	$3.$	Prostaglandins
$d$	Four carbon rings	$4.$	Terpenes

• A. $a-2,b-4,c-3,d-1$
• B. $a-2,b-1,c-4,d-3$
• C. $a-3,b-4,c-2,d-1$
• D. $a-4,b-3,c-1,d-2$
• E. $a-3,b-4,c-1,d-2$

Answer 1

Answer: (D)

$a-4,b-3,c-1,d-2$

• Terpenes are long chain lipids that are components of many biologically important pigments, like chlorophyll and visual pigment retina.
• Prostaglandins are also known as local hormones. They are like hormones in that they act as chemical messengers, but do not move to other sites, but work right within the cells, where they are synthesized.
• Sodium chloride is an important constituent of blood and serves to maintain osmotic balance. Living cells, in general, accumulate potassium and throw out sodium, which stays in circulating fluid, like blood.
• The steroid is derived from cholesterol and has a four-ring structure.

So, the correct option is 'D'.