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

Please wait...

• <<
• 1
• 2
• 3
• 4
• 5
• 6
• >>

 

Question 1 of 6

Biology

1. To what category of molecules do enzymes belong?

 

Proteins

Lipids

Carbohydrates

Nucleic acids

Question 1 of 6

Question 2 of 6

2. What is TRUE about cofactors?

 

Break hydrogen bonds in proteins

Are composed of proteins

Increase activation energy

Help facilitate enzyme activity

Question 2 of 6

Question 3 of 6

3. 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?

The enzyme molecules have denatured

More substrate has disturbed the pH of the medium

All active site have been occupied by substrate molecules

More substrate acted as inhibitor

Question 3 of 6

Question 4 of 6

4. Prosthetic groups are;

Loosely attached with enzymes

Required by all enzymes

Proteins in nature

Tightly bound to enzyme

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?

A

B

C

D

Question 5 of 6

Question 6 of 6

6. What is TRUE about enzymes?

 

They lower the activation energy of a reaction

They are needed in large quantities

They make biochemical reactions to proceed spontaneously

They are not very specific in their choice of substrates

Question 6 of 6

 Loading...

 

Other Related test

• Punjab 10th Class Computer Science Chapter 6 Computer Logic and Gates Mcqs Test Online
• Punjab 9th Class Computer Science Chapter 3 Office Automation Mcqs Test Online
• Punjab 11th Class Chemistry Chapter 7 Thermochemistry Mcqs Test Online
• Punjab 12th Class Chemistry Chapter 6 Transition Elements MCQs Test Online
• Punjab 12th Class English Good Bye Mr. Chips Chapter 5 MCQs Test Online
• Punjab 11th Class Biology Chapter 5 Variety of Life Mcqs Test Online
• Punjab 9th Class Physics Model Paper 1 MCQs Test Online
• Punjab 11th Class Math Chapter 6 Sequence and Series Mcqs Test Online
• Punjab 12th Class English A Dialogue Chapter 16 MCQs Test Online
• Punjab 11th Class Math Chapter 8 Mathematical Induction and Binomial Theorem Mcqs Test Online