Protein is described by biologists at………. levels.
Sequence or positional information of amino acid is given by the
[A] 2° structure
[B] 1° structure
[C] tertiary structure
[D] quaternary structure
In primary structure of protein
[A] Left end represent —> 1st amino acid (C-terminal amino acid)
[B] Right end represent —> Last amino acid (N terminal amino acid)
[C] Left end represent —> 1st amino acid (N-terminal amino acid)
[D] Right end represent —> 1st amino acid (C-terminal amino aci
Which structure is absolutely necessary for the many biological activities of proteins?
When assembly of more than one poly peptide occur it is known as ………. structure of protein,
Which of the following is correct about human Haemoglobin (Hb)?
[A] Made up to 2-α and 2-β subunits
[B] Present hi RBC
[C] Use to carry O2 and CO2
Select incorrect statement from the following:
[A] Most of the enzymes are protein
[B] ‘Hb’ is example of quaternary structure of protein
[C] In primary structure of protein, left hand is N-terminal and right hand is C-terminal
[D] In protein or polypeptide, amino acids are linked by glycosidic bond
Which of the following possess heterocyclic ring?
[B] Guanine and Cytosine
[C] Thymine and Uracil
Identify the nucleoside from the following:
B. Uridylic acid
D. Cytidylic acid
[A] A and B only
[B] A and C only
[C] C and D only
[D] B and C only
Which of the following act as a genetic material?
[A] DNA and RNA
[B] Uridylic acid
[C] Adenylic acid
[D] Gunanylic acid
Sugar + Nitrogen bases form
Sugar + Nitrogen bases + Phosphate forms
How many Nitrogen atoms are present in adenine?
DNA and RNA are
How much percentage of total cellular mass is formed by nucleic acid?
Following are purines
[D] Both (a) and (b)
Following are pyramidine (substituted):
[B] 3′ deoxyribose
[C] 5′ deoxyribose
[D] 2′ deoxyribose
The bond present between two nucleotides is known as
[A] phosphoester linkage
[B] phosphodiester linkage
[C] gycosidic linkage
[D] peptide linkage
Watson-Crick Structure of DNA is
[A] 1° structure
[B] 2° structure
[C] 3° structure
[D] 4° Structure