Punjab 9th Class Biology Chapter 6 Enzymes Punjab 9th Class

• <<
• 1
• 2
• 3
• 4
• 5
• 6
• >>

 

Question 1 of 6

Biology

1. When we add more substrate to an already occurring enzymatic reaction and there is no increase in the rate of reaction, what would you predict?

More substrate acted as inhibitor

All active site have been occupied by substrate molecules

The enzyme molecules have denatured

More substrate has disturbed the pH of the medium

Question 1 of 6

Question 2 of 6

2. What is TRUE about enzymes?

 

They are needed in large quantities

They are not very specific in their choice of substrates

They make biochemical reactions to proceed spontaneously

They lower the activation energy of a reaction

Question 2 of 6

Question 3 of 6

3. To what category of molecules do enzymes belong?

 

Carbohydrates

Lipids

Proteins

Nucleic acids

Question 3 of 6

Question 4 of 6

4. Prosthetic groups are;

Tightly bound to enzyme

Loosely attached with enzymes

Proteins in nature

Required by all enzymes

Question 4 of 6

Question 5 of 6

5. Which of these graphs correctly shows the effect of temperature on the rate of an enzyme-controlled reaction?

C

A

D

B

Question 5 of 6

Question 6 of 6

6. What is TRUE about cofactors?

 

Break hydrogen bonds in proteins

Help facilitate enzyme activity

Are composed of proteins

Increase activation energy

Question 6 of 6

 Loading...

 

Other Related test

• Punjab 9th Class Computer Model Paper 6 MCQs Test Online
• Punjab 9th Class English Model Paper 7 MCQs Test Online
• Punjab 9th Class Islamiat Chapter 3 Ilm Ki Farziyat o Fazeelat Mcqs Test Online
• Punjab 9th Class Pak Studies Model Paper 1 Mcqs Test Online
• Punjab 9th Class Urdu Chapter 2 Mirza Ghalib k Aadaat o Khasail Mcqs Test Online
• Punjab 9th Class Islamic Studies Model Paper 3 Mcqs Test Online
• Punjab 12th Class English Louis Pasture Chapter 14 MCQs Test Online
• Punjab 10th Class Islamic Studies Chapter 2 Sabr o Shukar aur Hamari Infiradi o Ijtimai Zindagi Mcqs Test Online
• Punjab 11th Class Computer Science Chapter 6 Wireless Communications Mcqs Test Online
• Punjab 9th Class English Chapter 2 Patriotism Mcqs Test Online