Which of the following is correct about amino acids?
Correct answer: D. Both A and C are correct
- A. Amino acids are compounds containing both an amino group (-NH₂) and a carboxyl group (-COOH)
- B. Amino acids are derivatives of methane
- C. The properties and types of amino acids are determined by the nature of their 'R' group, or side chain
- D. Both A and C are correct
Explanation
The correct answer is only A & C. Option A is correct because amino acids contain both an amino group (-NH₂) and a carboxylic acid group (-COOH). Option C is also correct because the properties and classification of amino acids depend on the nature of their side chains, referred to as 'R' groups. Option B is incorrect because amino acids are not substitutes for methane; they have a distinct structure that includes both amino and carboxylic groups, which methane does not have.
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.
More Biological Molecules questions
Which of the following is correct about human haemoglobin (Hb)?
Two amino acids are attached due to which bond:
Most abundant protein in blood:
An amino acid in which the R-group is hydrogen is
Which of the following is not a fibrous protein?
The amino acids are mainly different from each other due to the type and nature of: