Primary Structure of Protein
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- C terminal and N terminal, respectively
- reducing end and non reducing end, respectively
- non reducing end and reducing end, respectively
- N terminal and C terminal, respectively
Which of the following statement(s) is false, regarding Proteins ?
I. A protein is a heteropolymer but not a homopolymer.
II. Collagen is the most abundant protein in the animal world.
III. RUBISCO is the most abundant protein in the biosphere.
IV The first amino acid in a polypeptide chain is C- terminal amino acid and the last is N- terminal amino acid.
IV
I only
II only
II & III
Organelle without a cell membrane is :
Ribosome
Golgi apparatus
Chloroplast
Nucleus
Make a brief note about the four levels of protein structure.
What are structural and functional proteins ?
A homopolymer has only one type of building block called a monomer repeated n number of times. A heteropolymer has more than one type of monomer. Proteins are heteropolymers made of amino acids. While nucleic acid-like DNA or RNA is made of only 4 types of nucleotide monomers, proteins are made of how many types of monomers?
Lipido Bloor Fatty Acids MGDG
Nuclein Miescher Nucleotides DNA
Proteios Mulder Amino acids Collagen
Saccharide Liebig Glucose Cellulose
- Nucleus
- Cytoplasm
- Mitochondria
- Cell membrane
The primary structure of a protein is due to
Hydrogen bonds
Peptide bonds
–S-S- linkages
Ionic bonds
Schematically represent primary, secondary and tertiary structures of a hypothetical polymer say for example a protein.
Why are antiparallel beta-sheets more stable?
Differentiate between Lysosome and Ribosome.
Proteins have a primary structure. If you are given a method to know which amino acid is at either of the two termini (ends) of a protein, can you connect this information to purity or homogeneity of a protein?
Secondary
Tertiary
Quaternary
Primary
Skin, hair and nails are ________________ .
- The left end of the chain is C-terminal
- The protein contains 15 amino acids
- The right end of the chain is N-terminal
- The left end of the chain is N-terminal
Which of the following statement(s) is false, regarding Proteins ?
I. A protein is a heteropolymer but not a homopolymer.
II. Collagen is the most abundant protein in the animal world.
III. RUBISCO is the most abundant protein in the biosphere.
IV The first amino acid in a polypeptide chain is C- terminal amino acid and the last is N- terminal amino acid.
I only
II only
ll & lll
IV
Which one of the following is linked in long chains to form proteins?
Sugars
Amino acids
Nucleosides
Nucleotides
Define the following as related to proteins:
Primary structure
- Peptone
- Phosphoprotein
- Lipoprotein
- Chromoprotein
- Support of the organelle
- Maintenance of cell shape and structure
- Cell motility
- Intracellular transport
Plant cells do not show endocytosis because
They have a rigid cell wall and internal turgor pressure
They have a large vacuole
They have a nucleus which is pushed to one side
They show plasmolysis
Where are proteins synthesised inside the cell?
Write a brief remark on protein ternary structure.
- Primary
- Secondary
- Tertiary
- Quartenary
- Primary
- Secondary
- Tertiary
- Quarternary
- 20, 16
- 16, 16
- 16, 20
- 18, 16
Proteins have primary structure. If you are given a method to know which amino acid is at either of the two termini (ends) of a protein, can you connect this information to purity or homogeneity of a protein?