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Chapter 10 Proteins

QuestionAnswer
The interaction of the side chains of amino acids is the ___ structure of a protein. secondary
Which type of forces stabilizes the secondary structure of a protein? Backbone hydrogen bonding between the carbonyl group and amino group
The alpha-helix is an example of: secondary
Detergents would most likely disrupt what type of stabilizing interaction? hydrophobic interaction
Some enzymes require a nonprotein organic component in order to have full activity. This component is called a: coenzyme
Heavy metals such as Pb2+ or Hg+ act as irreversible
Enzymes function as a catalyst by: lowering the activation energy of a reaction
A molecule that is similar in terms of the correct structure to the substrate for an enzyme will probably be a: competitive inhibitor
When a molecule binds to an enzyme at a site other than the active site and affects enzyme shape it is called a(n): noncompetitive inhibitor
What type of amino acid is glutamic acid? nonpolar neutral
What type of amino acid is phenylalanine? nonpolar neutral
What type of amino acid is histidine? basic
Which list contains only essential amino acids? Pro, Met, Val, Leu Thr, His, Lys His, Lys, Trp, lle Ala, Val, Phe, Met His, Lys, Trp, lle
An essential amino acid is defined as one that: must be part of the proteins of the food supply of humans
Which amino acid is the N-terminal group in the following peptide? Gly-Ala-Val-Phe-Tyr Gly
What is an example of globular protein? keratins collagen myoglobin skin myoglobin
Each of the following can cause a protein to denature except: heat detergents enzyme treatment change in pH enzyme treatment
The model that explains that the substrate fits exactly into the active site of an enzyme is called: lock and key
What factors can influence the speed of a reaction by an enzyme? The orientation of the reactants The weakening of bond energies in the reactants The closeness of the reactants to each other in the active site
Created by: mosciencehelp
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