Biology Online Multiple Choice Questions with Answers – PDF Download

MCQ 1: The addition of water in the carbohydrate is the reverse of condensation and is known as:

1. polymerization
2. hydrolysis
3. titration
4. disintegration

MCQ 2: Biological catalysts that speed up reactions by lowering the activation energy is called:

1. enzyme
2. carrier proteins
3. linker protein
4. catalyst

MCQ 3: People who are suffering from Emphysema,:

1. have very low rate of breathing
2. manage to oxygenate the blood in lungs
3. their right side of the heart increases
4. their left side of the heart increases

MCQ 4: The Tunica media near the heart does not include:

1. more muscles
2. fewer elastic fibers
3. more elastic fibers
4. no collagen

MCQ 5: Cell division and cell elongation is affected by:

1. gibberellins
2. auxins
3. abscisic acid
4. cytokinins