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CUET UG Amines and Biomolecules — practice questions — page 3

Explore 168 free Amines and Biomolecules questions in CUET UG Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Amines and Biomolecules questions and exercises with answers

Showing questions 61–90 of 168.

The word protein comes from a Greek word meaning:Read the answer and worked solution →Amino acids the body cannot make and must eat are called:Read the answer and worked solution →The dipolar ion form of an amino acid is called a:Read the answer and worked solution →Which amino acid is not optically active?Read the answer and worked solution →Most naturally occurring amino acids carry which configuration?Read the answer and worked solution →The bond joining two amino acids in a protein is a:Read the answer and worked solution →A chain of more than ten amino acids is called a:Read the answer and worked solution →Keratin and myosin are examples of which class of protein?Read the answer and worked solution →Insulin and albumin are examples of which class of protein?Read the answer and worked solution →The sequence of amino acids in a chain is its:Read the answer and worked solution →The alpha helix and the beta pleated sheet belong to which level?Read the answer and worked solution →The arrangement of sub-units in a protein is its:Read the answer and worked solution →On denaturation a protein loses which structures?Read the answer and worked solution →The coagulation of egg white on boiling is an example of:Read the answer and worked solution →Almost all enzymes are which kind of protein?Read the answer and worked solution →The name of an enzyme almost always ends in:Read the answer and worked solution →Enzymes speed a reaction by lowering its:Read the answer and worked solution →Which set of vitamins is fat soluble?Read the answer and worked solution →Water soluble vitamins must be eaten regularly because they are:Read the answer and worked solution →The sugar found in a DNA molecule is:Read the answer and worked solution →Which base occurs in RNA but not in DNA?Read the answer and worked solution →A base attached to a sugar without phosphate is called a:Read the answer and worked solution →Nucleotides in a chain are joined by which linkage?Read the answer and worked solution →In the DNA double helix adenine pairs with:Read the answer and worked solution →Aniline heated with sulphuric acid finally yields:Read the answer and worked solution →The chief drawback of ammonolysis is that it yields a:Read the answer and worked solution →In ammonolysis the order of reactivity of alkyl halides is:Read the answer and worked solution →The alpha helix and the beta pleated sheet belong to which level?Read the answer and worked solution →The arrangement of sub-units in a protein is its:Read the answer and worked solution →The name of an enzyme almost always ends in:Read the answer and worked solution →

Worked practice questions

The word protein comes from a Greek word meaning:

  1. Of prime importance
  2. Of steady structure
  3. Of soluble material
  4. Of similar molecules
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Correct answer: A. Of prime importance

1. The Greek root of the word is proteios. 2. It was chosen to mark how central these molecules are. 3. It means primary or of prime importance. _Source: syllabus Chemistry Part 2, Unit 10 'Biomolecules'_

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Amino acids the body cannot make and must eat are called:

  1. Expansive
  2. Essential
  3. Excessive
  4. Extensive
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Correct answer: B. Essential

1. Some amino acids are built inside the body. 2. Others have no such route and must come from food. 3. Those are the essential amino acids. _Source: syllabus Chemistry Part 2, Unit 10 'Biomolecules'_

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The dipolar ion form of an amino acid is called a:

  1. Zincate ion
  2. Zirconate ion
  3. Zwitter ion
  4. Zeolite ion
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Correct answer: C. Zwitter ion

1. The carboxyl group loses a proton. 2. The amino group takes one up. 3. The neutral doubly charged form is the zwitter ion. _Source: syllabus Chemistry Part 2, Unit 10 'Biomolecules'_

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