Tag: proteins and enzymes

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Multiple choice bio-chemistry proteins denaturation of protein proteins and amino acids proteins and enzymes

The sequence in which the $\alpha$-amino acids are linked to one another in a protein molecule is called its:

  1. primary structure

  2. secondary structure

  3. tertiary structure

  4. quaternary structure
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The primary structure of a protein is defined by the linear sequence of amino acids linked by peptide bonds. Secondary, tertiary, and quaternary structures refer to the folding and spatial arrangement of this chain.

Multiple choice bio-chemistry proteins denaturation of protein proteins and amino acids proteins and enzymes

Structure of t-RNA is:

  1. Linear

  2. Branched

  3. Single helix

  4. Clover leaf structure
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Structure of $tRNA$ is single helix. $tRNA$ is a type of RNA molecule that helps decode $mRNA$ sequence into a protein. $tRNA$ functions at specific sites in the ribosome during translation, which is a process that synthesizes a protein from an $mRNA$ molecule.

Multiple choice bio-chemistry proteins denaturation of protein proteins and amino acids proteins and enzymes

Which of the following statements are true about (X) and (Y)?
X)  Globular Protein               Y)  Fibrous Protein
a.These are linear condensation polymers.
b. Insoluble in water.
c. These proteins have three dimensional folded structure.
d. These are cross linked protein.
e. Soluble in water
f. These are held together by intermolecular hydrogen bond.

  1. X = a, b, c; Y = d, e, f

  2. X = c, d, e; Y = a, b, f

  3. X = b, c, a; Y = c, b, f

  4. X = a, e, f; Y = b, c, f
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Globular Proteins have three dimensional folded structure.
These are cross linked protein.
They are Soluble in water.
Fibrous Proteins are linear condensation polymers.
They are Insoluble in water.
These are held together by intermolecular hydrogen bond.