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WorksheetsBiochem (Enzymes) Sample Qs
Total questions: 21
Worksheet time: 11mins
These substances are proteins that can act as a biological catalyst:
Hormones
Enzymes
Vitamins
Mineral
Nomenclature of enzymes are based on the following, except:
Nature of the general substrate
Name of the specific substrate
Type of reaction
Biosynthetic or catabolic nature
Which of the following is true regarding enzymes?
Are not reusable
Are needed in large amounts
Decrease the energy of activation of the reaction
Increase the energy of activation of the
reaction
Enzymes that catalyze the reaction which joins two molecules or chemical groups:
Lyases
Ligases
Transferases
Oxidotransferases
Proteases are examples of what general classification or enzymes?
Oxidoreductase
Lyases
Ligases
Hydrolase
The enzyme conformation adapts to the incoming substrate in:
Lock and Key Theory
Induced Fit Theory
Competitive Inhibition
Non - competitive inhibition
Which of this class of enzymes introduces a double bond by the removal of hydrogen?
Dehydrogenase
Dehyrolase
Decarboxylase
Lipase
The type of inhibition reaction whereby the inhibitor competes with the substrate at the active site.
Competitive inhibition
Non - competitive inhibition
Reversible inhibition
Incomplete inhibition
Milk curdling enzyme present in the gastric juice of infants:
Pepsin
Rennin
Trypsin
Malese
Optimum temperature for enzyme activity in the body:
40 °C
60°C
37°C
10°C
The activator metal of carbonic anhydrase is:
Zinc
Iron
Molybdenum
Magnesium
Enzymes that catalyze the anaerobic processes of carbohydrate metabolism are found predominantly in which part of a cell?
Cytoplasm
Membrane
Cell wall
Nucleus
Enzymes concerned with the citric acid cycle are found in the:
Nucleus
Ribosomes
Mitochondria
Non - particulate cytoplasm
Protein kinase regulate the activities of key enzymes through which of the following?
A. Oxidation
B. Hydrolysis
C. Acetylation
D. Phosphorylation
Enzymes for electron transport reactions are most active and concentrated in which of the following structures of the animal cell?
Nuclei
Lysosomes
Microsomes
Mitochondria
Which of the following enzymes is essentially absent from normal mammalian muscle?
Glucokinase
Phosphorylase
Glucose-6-phosphatase
Glucose-6-phosphate isomerase
Dental plaque arises primarily as a result of enzymatic reactions using which of the following?
Sucrose and lipid
Sucrose and saliva
Glucose and saliva
Glucose and protein
Which of the following liver enzymes, absent from other tissues, gives the liver an advantage over other cells in taking up glucose after a meal?
Glucokinase
Aldolase
Hexokinase
Enolase
This is a fermenting enzyme that causes the conversion of monosaccharide into alcohol and carbon dioxide.
Carboxylase
Invertase
Zymase
Convertase
A lipolytic enzyme capable of digesting dietary fat.
Lipase
Fatase
Ptyalin
Amylase
Pepsinogen is an example of zymogen which is inactive. Pepsinogen is activated by:
HCI
Enterokinase
Ptyalin
Lyases
