TestUstad

Which one of the following amino acids is basic in nature?

Correct answer: C. lysine

  • A. glycine
  • B. alanine
  • C. lysine
  • D. glutamic acid

Explanation

Lysine is a basic amino acid. It has a side chain with an amino group (-NH2) which can accept a proton (H+) and make the amino acid basic in nature. Lysine has a positively charged amino group at physiological pH, which contributes to its basicity. Therefore, lysine is the basic amino acid.

Written and checked by , M.Phil ChemistryLast updated
Report an error

The more specific you are, the faster it gets fixed. A source beats an opinion.

Prefer email? [email protected]

About Macromolecules

Proteins are classified by shape, composition and structure, from primary amino acid sequence to secondary, tertiary and quaternary organisation, and their biological roles are linked to this structure. Enzymes are examined as protein biocatalysts, including active sites, substrate specificity, activation energy, cofactors and factors affecting activity.

Practise Macromolecules

299 free Macromolecules MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Start a free Macromolecules testAll Macromolecules MCQs

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 Chemistry questions like this

Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Lecturer Chemistry Test Chemistry80 MCQsSubject Specialist Chemistry Test Chemistry80 MCQsDUHS Chemistry45 MCQsETEA MDCAT Chemistry45 MCQsKMU Chemistry45 MCQsMDCAT Chemistry45 MCQsNUMS Chemistry40 MCQsECAT Chemistry30 MCQsETEA Engineering Admission Test Chemistry30 MCQsGIKI Chemistry30 MCQsNED Chemistry30 MCQsNET Chemistry30 MCQsPIEAS Chemistry30 MCQsBSN Entry Test Chemistry25 MCQs

More Macromolecules questions

Which of the following family is linked with plant ashes?

Amino acids are bi-functional compounds, with a general formula NH2CH(R)CO2H. A tripeptide is formed between Alanine (ala), Glycine (gly), and lysine (lys). There is no repetition of amino acid in this tri-peptide; suggest how many tri-peptides are possible?

According to Watson and Crick's model of DNA, the DNA molecule consists of a double helix. What type of forces are responsible to keep two strands of DNA together?

Haemoglobin is a

Out of these, which nitrogen base is NOT present in DNA?

In basic conditions, amino acid exists in which of the following forms?