Chemistry Questions
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The side chains of nonpolar amino acids are best categorized as:
In an aqueous solution, protein conformation is determined by two major factors. One is the formation of the maximum number of hydrogen bonds. The other is the:
Protein subunits in a multisubunit protein are held to each other primarily by
The average molecular weight of the 20 standard amino acids is 138, but biochemists use 110 when estimating the number of amino acids in a protein of known molecular weight. Why?
The concentration of hydrogen ion (H+) in a solution is measured using which scale?
An α-helix can be represented in various ways by molecular visualisation computer software. Consider the following molecular representations of the -helix where the 'side view' of the helix shows the N-terminal at the bottom and the C-terminal at the top. The 'top view' of the helix shows the C-terminal end of the helix. Then answer the questions. Please note that more than one of the given alternatives may be correct. Choosing an incorrect answer will result in a mark deducted from the correct choices.
the information required for the correct folding of a protein is contained in the specific sequence amino acids along the polypeptide chain
The principle forces holding subunits of an oligomeric protein to each other are ________
All amino acids can readily interconvert between the cis and trans forms by rotation about the peptide bond.
Which represents the backbone atoms of a protein? Note: R = amino acid side chain; N = nitrogen; Cα = alpha carbon; C = carbonyl carbon
In oligomeric proteins all the subunits are always identical
A polypeptide chain may have abrupt changes in direction and restriction in geometry because of the presence of
Where is carbamolyphosphate synthetase I (CPS I) most commonly found and CPS II?
The subunits of a multisubunit proteins are always identical
The peptide bond is which of the following?
what happens to the helix shape when a protein molecule is changed
What is the formula for the strong base lithium hydroxide?
What is the formula for the strong base potassium hydroxide?
What is the formula for the strong acid nitric acid?
What is the formula for the strong acid sulfuric acid?