Quaternary protein structure is: a) interactions of a single polypeptide\'s side
ID: 93066 • Letter: Q
Question
Quaternary protein structure is: a) interactions of a single polypeptide's side chains b) H-bonding of atoms in the peptide backbone c) interactions of two or more polypeptides d) linear sequence of amino acids e) peptidoyl bonding A single polypeptide has 100% of its amino acids engaged in secondary and tertiary structure and has 3 disulfide bonds is an enzyme that is very difficult to irreversibly denature because: a) secondary structure provides conformational stability b) tertiary structure provides conformational stability c) disulfide bonds provides conformational stability d) all are true e) none are true Proteins run from (beginning to end): a) 5' to 3' b) 3' to 5' c) carboxy to amino d) amino to carboxy The alpha-helix is an example of: a) primary structure b) secondary structure c) tertiary structure d) quaternary structure The Alpha_2 Beta_2 composition of hemoglobin is an example of: a) primary structure b) secondary structure c) tertiary structure d) quaternary structure Reactions that result in oxidation of nutrients and production of ATP: a) intermediary b) catabolism c) anabolism Reactions that are biosynthetic and consume ATP: a) intermediary metabolism b) catabolism c) anabolism Polynucleotides run from (beginning to end). a)5' to 3' b) 3' to 5' c) carboxy to amino d) amino to Carboxy Interactions that may contribute to secondary structure are. a) H-bonds b) ionic bonds c) hydrophobic interactions d) covalent bonds e) all of these Interactions that may contribute to tertiary structure are: a) H-bonds b) ionic bonds c) hydrophobic interactions d) covalent bonds e) all of these Interactions that may contribute to quaternary structure are: a) H-bonds b) ionic bonds c) hydrophobic interactions d) covalent bonds e) all of these Base pairs of nucleotides are held together by: a) covalent bonds b) ionic bonds c) H-bonds d) hydrophobic interactions e) none of these In mononucleotides, the sugar, ribose and deoxyribose, differ in: a) the carbon the N-base attaches to b) the carbon the phosphate attaches to c) the number of carbons in the sugar itself d) the number of hydroxyls in the sugar itself e) none of these The amino acid serine has a side chain of -CH_2OH. This amino acid would be. a) polar b) nonpolar c) acidic d) basic The amino acid glycine has a side chain of-H. This amino acid would be a) polarExplanation / Answer
According to the Chegg guidelines I'll answer the first question when more than one question is posted.
Answer is c) Interaction of two or more polypeptide sequence. Quaternary structure are made when two protein subunits interact which eachother and act as a single protein or enzyme. The different polypeptides are called subunits.
A) interaction of single polypeptide's side chain makes the tertiary structure of protein by making intra disulphide bonds and hydrophobic interactions.
B) h bonding of atoms in peptide back bone is also wrong because he bond in peptide backbone makes the secondary structure like alpha helix and beta sheets by making h bonds.
D) linear sequence of amino acid makes the primary structure of amino acid so it is also a wrong option.
E) Peptidoyl bonding is also wrong because nothing exists like Peptidoyl bonding. It is the peptide bond that attaches two amino acids.