Directions How to Answer

Aptitude Test Topic: Chemistry

Chemistry test evaluate test taker's in-depth understanding of the subject.

Directions

The following are questions of Chemistry. Select the correct option to represent your answer.

To give the answer click/tap the option alphabet for your answer choice. for correct answer green check and for wrong answer a red cross will appear along with a button to show explanation with or without video of the question answer.

Chemistry: All Topics Practice MCQ

Question Statement:

The 21st amino acid is

hydroxyl lysine

hydroxyl proline

selenocysteine

citrulline

Explanation:

Correct Answer: C

Selenocysteine (abbreviated as Sec) is the 21st proteinogenic amino acid. It exists naturally in all kingdoms of life as a building block of selenoproteins.

Question: 5 Test: 2 of 15 Next Test

Tests

You are taking Aptitude Test No. 2

Each aptitude test is comprised of 10 except the last test which might have fewer than 10 in some topics.

You are at question (MCQ) number 5 and Test Number 2 of Chemistry: All topics. To deal with Chemistry questions, you must take lesson on the subject. In case of science and Art subjects revise your text books and in case of general aptitude topics take lessons from the topic page.

The question: The 21st amino acid is .... with options: hydroxyl lysine , hydroxyl proline , selenocysteine , citrulline can be solved with the concepts and understanding of Chemistry.