Figure 1 shows the structure of enzyme N change to structure R when being heat above 60^oC through the process P. Name P?

• hydrolysis

• deamination

• denaturation

• condensation

Figure shows an illustration to describe the ‘lock and key’ hypothesis in the enzyme reaction.Which of the followings to represent P, Q and R

• P-Substrate, Q- Product, R-Enzyme

• P-Enzyme, Q- Substrate, R-Product

• P-Substrate, Q- Enzyme, R-Product

• P-Product, Q- Enzyme, R-Substrate

Diagram shows the synthesis of enzyme in a cell.

• Energy cannot be generated

• Enzyme cannot be synthesized

• Protein synthesized cannot be modified

• Protein synthesized cannot be transported

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-4

NGSS.HS-LS1-6

Enzymes are great commercial and industrial importance.

Choose the correct enzyme and its application

• I and II only

• II and III only

• I, II and III only

• I, II, III and IV

Tags

NGSS.HS-ETS1-3

Figure shows structure protein A and structure protein B.

• pH and temperature

• light intensity and humidity

• pH and enzyme concentration

• salt concentration and temperature

Tags

NGSS.HS-LS1-6

Which of the following graphs represents the effect of pH on the rate of reaction by trypsin?

• 
• 
• 
• 

Graph in figure shows the effects of temperature on the rate of an enzyme- catalysed-reaction. Which of the following statement is correct?

• When the temperatures is low, the enzyme-catalyzed reaction is high.

• When the temperatures is high, the rate of reaction is not accelerated.

• When the temperatures is optimum, the enzyme catalyses the reaction at the maximum rate.

• When the temperatures is beyond the optimum, the enzyme catalyses the reaction is increase

Table shows the result obtained from the experiment to investigate the temperature on the activity of amylase.What inference can be made from the above observations?

• In test tube Q, rate of reaction is decreasing.

• In test tube R, rate of reaction is optimum

• In test tube S, rate of reaction is increasing

• In test tube T, rate of reaction is accelerated

Tags

NGSS.HS-PS1-5

Figure shows the relationship between the rate of reaction and substrate concentration.

• When the concentration of substrate increase more product is produced because more subtrate molecules are available to bind the active sites of the enzymes

• The rate of reaction increases because there are less chances of collisions between the substrate molecules and the enzymes molecules

• When the substrate concentration increases, the speed of reaction also increases because less substrate binds the active of the enzymes

• The rate of reaction is directly proportional the substrate concentrate continuously without limiting factor.

Which enzyme works best at pH 1.5 - 2.5?

• Lipase

• Pepsin

• Trypsin

• Amylase