Adult human haemoglobin consists of:
(1) 2 subunits (β, β)
(2) 2 subunits (α, α)
(3) 4 subunits (2α, 2β)
(4) 3 subunits (2α, 1β)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyLong protein chain folded upon itself like a hollow woolen ball and gives us a 3-dimensional view of a protein belongs to
1. Primary structure
2. Secondary structure
3. Tertiary structure
4. Quaternary structure
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following statements is not correct about proteins?
1. The first amino acid of all the proteins is also known as N-terminal amino acid
2. In proteins, only right handed helics are observed
3. - helics are tertiary structures of proteins
4. Primary structure of a protein dictates its secondary and tertiary conformations
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIdentify the incorrect statement regarding the structure of proteins:
1. | They are heteropolymers containing strings of amino acids. |
2. | The first amino acid in the primary structure is the N-terminus amino acid |
3. | Only left helices are observed in proteins |
4. | Tertiary structure is absolutely essential for many biologic functions of the proteins |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is not the function of protein
(1)Act as hormones
(2)act as enzymes
(3)act as genetic material
(4)fight against infections
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyG.N. Ramachandran discovered the structure of collagen which is a/an:
1. Alpha helix
2. Beta pleated sheet
3. Triple helix
4. Icosahederon
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe quaternary structure of a protein:
(1) Consists of 4 subunits - hence the name quaternary
(2) Is unrelated to the function of the protein
(3) Both (a) and (b)
(4) Depends on the 1° structure of subunits
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology