The peptide linkage is:
Correct answer: C. -CONH
- A. CONH2
- B. -COONH2
- C. -CONH
- D. -CH-NH
Explanation
The peptide bond is a covalent linkage formed between the carboxyl group of one amino acid and the amino group of another amino acid. This reaction releases a molecule of water (H2O) and results in the formation of a -CONH- linkage, which is characteristic of peptide bonds. Option C is correct because it accurately depicts the structure of a peptide bond. Option A is incorrect because CONH2 is an amide group but not a peptide bond. Option B is incorrect as -COONH2 is not a valid structural representation of a peptide bond. Option D is incorrect because -CH-NH lacks the necessary carbonyl group present in peptides.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Biological Molecules
The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
Practise Biological Molecules
1,790 free Biological Molecules MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.