Multiple ChoiceThe primary building blocks (monomers) of proteins are: a) Glucose molecules.b) Lipids.c) Nucleotides.d) Amino acids.e) None of these.3656views22rank
Multiple ChoiceWhich two functional groups are always found in amino acids?a) Carbonyl and amino groups.b) Carboxyl and amino groups.c) Amino and sulfhydryl groups.d) Hydroxyl and carboxyl groups.7969views28rank
Multiple ChoiceWhat term is used for an amino acid chain that has greater than 50 covalently linked amino acids?a) Protein.b) Peptide.c) Amino acid.d) Polypeptide.3205views30rank
Multiple ChoiceThe specific amino acid sequence in a protein is its:a) Primary structure.b) Secondary structure.c) Tertiary structure.d) Quaternary structure.3480views21rank
Multiple ChoiceWhich of the following is true of protein structure?a) Peptide bonds are formed by hydrolysis.b) Peptide bonds join the amine group on one amino acid with the R group of another amino acid.c) Secondary protein structures are caused by hydrogen bonding between atoms of the peptide backbone.d) Tertiary protein structure emerges when there is more than one polypeptide in a protein.4230views28rank3comments
Multiple ChoiceWhat is the role of a chaperone protein?a) Assist in RNA and DNA folding.b) Assist in membrane transport.c) Assist in protein denaturation.d) Assist in dehydration synthesis reactions.e) Assist in protein folding or re-naturing.2664views26rank
Multiple ChoiceThe overall three-dimensional shape of a single polypeptide is called its __________. 1015views
Multiple ChoiceWhich of the following lists ranks these molecules in the correct order by size from smallest to largest? 1139views1rank
Multiple ChoiceWhich of the following represents a specific description of a polypeptide? 1094views1rank
Multiple ChoiceEnzyme molecules require a specific shape to perform their catalytic function. Which of the following might alter the shape of an enzymatic protein? 988views1rank
Multiple ChoiceThe α helix and β pleated sheet represent which level of protein structure? 937views2rank
Textbook QuestionWhat two functional groups are bound to the central carbon of every free amino acid monomer? a. an R-group and a hydroxyl group b. an N—H group and a ═(C═O) group c. an amino group and a hydroxyl group d. an amino group and a carboxyl group1246views
Textbook QuestionDifferent proteins are composed of different sequences of . a. sugars; b. lipids; c. fats; d. amino acids; e. carbohydrates962views
Textbook QuestionProteins may function as . a. genetic material; b. cholesterol molecules; c. fat reserves; d. enzymes; e. all of the above863views
Textbook QuestionWhich structural level of a protein would be least affected by a disruption in hydrogen bonding? a. primary structure b. secondary structure c. tertiary structure d. quaternary structure1140views
Textbook QuestionMost proteins are soluble in the aqueous environment of a cell. Knowing that, where in the overall three-dimensional shape of a protein would you expect to find amino acids with hydrophobic R groups?1050views
Textbook QuestionWhat are the two types of secondary structures found in polypeptides, and what maintains them? What stabilizes the tertiary structure of a polypeptide?817views
Textbook QuestionHow can a cell make many different kinds of proteins out of only 20 amino acids? Of the myriad possibilities, how does the cell 'know' which proteins to make?933views
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