FACTORS AFFECTING ENZYMATIC REACTION

At point of saturation, what happens to the active sites of enzymes?

• All active sites are empty

• Active sites become inactive

• All active sites are fully saturated with substrates

• Active sites decrease in number

What happens to the rate of reaction when the pH changes away from the optimum pH value?

• Rate of reaction increases

• Rate of reaction becomes unpredictable

• Rate of reaction remains constant

• Rate of reaction decreases

What is the optimum pH for Trypsin?

• pH 9.0

• pH 8.0

• pH 4.5

• pH 2.0

At low temperature, why is the rate of reaction low?

• Number of collisions between enzyme and substrate is low

• Movement of molecules is fast

• Enzyme is inactive

• Enzyme-substrate complexes are formed rapidly

What happens to the enzyme at very high temperatures?

• Enzyme concentration increases

• Enzyme becomes more active

• Enzyme becomes denatured

• Enzyme loses its normal conformation

What is the relationship between enzyme concentration and the rate of enzyme reaction?

• Rate of reaction decreases with enzyme concentration

• Rate of reaction is inversely proportional to enzyme concentration

• Rate of reaction is directly proportional to enzyme concentration

• Rate of reaction is not affected by enzyme concentration

What happens when the substrate can no longer bind to the active site of the enzyme?

• Rate of reaction becomes unpredictable

• Rate of reaction decreases

• Rate of reaction remains constant

• Rate of reaction increases

What is the optimum temperature for human enzymes?

• 20°C to 25°C

• 35°C to 40°C

• 10°C to 15°C

• 70°C or higher

What happens to the rate of reaction when the enzyme concentration is increased?

• Rate of reaction decreases

• Rate of reaction remains constant

• Rate of reaction increases

• Rate of reaction becomes unpredictable