The Living World Question 83
Question: Assertion : Amino acids are interliked by peptide bonds to form amino acids. Reason : The smallest protein is ACTH.
Options:
A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
Show Answer
Answer:
Correct Answer: B
Solution:
Amino acids form peptide bonds between each other and ultimately proteins are formed.
$ R-\underset{NH_3}{\mathop{\overset{H}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}\,C}}\,O\begin{matrix} OH+H \\\ \end{matrix}\overset{H_2}{\mathop{\overset{|}{\mathop{N}}\,-}}\,\underset{H}{\overset{R}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-COOH $ $ \to R-\underset{NH_3}{\mathop{\overset{H}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}\,-}}\,\underset{\text{Peptide bond}}{\mathop{\begin{matrix} CONH_2 \\\ \end{matrix}}}\,-\underset{H}{\overset{R}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-COOH $ The smallest protein is adrenocorticotrophic hormone or ACTH.
It has a molecular weight of 4500 daltons and contains 39 amino acids
BETA
