Biology Multiple Choice
Which statement regarding enzymes is false: enzymes speed up reaction rate, enzymes lower activation energy of a reaction, enzyme reaction rate increases with temperature up to a certain point, enzyme reaction rate decreases as the concentration of substrate increases, all of the above
enzyme rate decreases as the concentration of substrate increases
Which of the following reactions would result in the production of water: hydrolysis reaction, formation of a disulphide bond, formation of a peptide bond, breaking a disaccharide, all of the above
formation of a peptide bond
Which of the following factors do not impact enzyme activity: temperature, substrate concentration, pH, ionic concentrations, none of the above
none of the above
A polypeptide chain is held together by
peptide bonds
Allosteric sites are responsible for
regulation enzyme activity
Which of the following does not belong: methane, cyclohexane, propanol, sodium chloride, water
sodium chloride
Cholesterol is a precursor for which: testosterone, fatty acids, trans fat, phospholipids, all of the above
testosterone
Which part of an amino acid has the greatest influence on the overall structure of a protein
the R group
Which of the following is not primarily composed of protein: hair, urine, nails, enzymes, collagen
unrine
How is a polymer formed from multiple monomers?
By the removal of an -OH group and a hydrogen atom
What makes starch different from cellulose?
Cellulose forms long filaments, while starch is highly branched.
Which carbohydrate would you find as part of a molecule of RNA?
Ribose
A reaction produces water as a product. Which statement regarding the reaction is false: a condensation reaction may have occurred, a dehydration reaction, a neutralization reaction, a hydrolysis reaction, all of the above
a hydrolysis reaction
A triglyceride is a form of ____________ composed of ________.
lipid; fatty acids and glycerol
