application of enzymes in daily life

What are the advantage of using immobilised enzymes:

(Choose all that apply)

• enzymes can be reused

• immobilised enzymes are more stable

• Product is not contaminated by the enzymes

• Easy separation of the enzymes from product

• Enzymes may detached

What is immobilised enzyme?

• enzymes that combine with inert and insoluble substances to increase the resistance of enzymes towards change in factors such as pH and temperature

• enzymes that combine with inert and insoluble substances to decrease the resistance of enzymes towards change in factors such as pH and temperature

• enzymes that combine with reactive and soluble substances to increase the resistance of enzymes towards change in factors such as pH and temperature

• enzymes that combine with reactive and soluble substances to decrease the resistance of enzymes towards change in factors such as pH and temperature

Housewife usually marinate meat with papaya leaves to tenderise meat. Which of the following can be used to reduce the time taken for meat to become tender?

• add some salt

• add some flour

• keep at temperature of 40°C

• keep in refrigerator for one hour

Which of the following is/are correctly matched between enzyme and its application?

(Choose all that apply)

• Lipase remove lactose from whey

• Amylase involved in production of fructose syrup

• Protease is used in biological detergent

• Papain is used to tenderise the meat

Blood stain can be removed by

• protease

• lipase

• cellulase

• amylase

vegetable stain can be removed by

• protease

• lipase

• cellulase

• amylase

Pectinase is used to digest ________ in plant cells. Thus, it helps to produce ___________ and more volume of fruit juice.

• protein, clear

• protein, sweet

• pectin, sweet

• pectin, clear

The diagram above shows a blouse with cheesecake stain that will be washed with a detergent containing enzyme. What is the most suitable enzyme and temperature used to clean the clothes?

• Protease; 37°C

• Amylase; 25°C

• Protease; 18°C

• Lipase; 37°C

Yeast produce ____________ to digest sugar into _____________.

• amylase, glucose

• zymase, glucose

• zymase, ethanol

• amylase, ethanol

Which of the following enzymes are used in textile industry to remove fur from animal hides?

• pepsin

• trypsin

• renin

• protease