Form 4 Biology Quiz

Which organelle has the function as below?

"Transports the proteins synthesized by ribosomes to other parts of the cell."

• Lysosome

• Rough endoplasmic reticulum

• Smooth endoplasmic reticulum

• Golgi apparatus

Answer explanation

Rough endoplasmic reticulum transports the proteins synthesized by ribosomes to Golgi aparatus.

Which of the following shows the importance of structure X to the organism?

• When the organism is in a hot environment, structure X will regulate the temperature of the organism.

• When the organism is in an isotonic environment, structure X will contract to expel excess water.

• When the organism is in a hypotonic environment, structure X will contract to expel excess water

• When the organism is in a hypertonic environment, structure X will contract to expel excess water.

What is the name of the process?

• Simple diffusion

• Facilitated diffusion

• Active transport

• Osmosis

Glucose + Y --------> Sucrose + water

What is Y?

• Glucose

• Fructose

• Galactose

Diagram shows DNA strand.

What is nitrogenous base P and Q?

• P: Adenine

  Q: Guanine

• P: Guanine

  Q: Adenine

• P: Thymine

  Q: Cytosine

• P: Cytosine

  Q: Thymine

Diagram shows a phase in a type of cell division. What is the phase?

• Metaphase

• Metaphase I

• Anaphase

• Anaphase I

Rajah 6 shows a human cell formed by meiosis.

Which of the following is correct?

• Cell P is diploid.

• No variation in cell P.

• Genetic content of cell P is the same with the parent cell.

• The chromosome number of cell P is half the chromosome number of the parent cell.

Diagram shows a tracheae system in an insect.

What is X?

• Trachaea

• Spiracle

• Muscle

• Air sacs

Diagram shows an organ that is involved in human digestive system.

Which of the following digestion process occurs in the organ?

• 
• 
• 
• 

An artificial pacemaker is implanted in individual with bradycardia, which is a slow or erratic heartbeat. How does this device work?

• Artificial pacemakers initiate nerve impulses.

• Electrical impulses are sent by the pacemaker device to produce a heartbeat.

• Artificial pacemaker causes atria to relax to pump blood into the ventricles .

• Artificial pacemakers initiate electric impulses in the Purkinje fibres.