MCQ DRILL 16

What will happen to the Paramecium sp. If structure Y does not function?

• Burst

• Maintain its shape

• Shrink

• Expand

What is structure X?

• Cholesterol

• Phospholipid

• Carrier protein

• Glycolipid

What is the process?

• Osmosis

• Simple diffusion

• Active transport

• Facilitated diffusion

What is the function of cholesterol in plasma membrane?

• To help cells recognize each other

• To stabilize the fluid properties of the plasma membrane

• To regulate the movement of water -soluble substances such as ions

• Acts as a carrier protein to transport substances across the plasma membrane

  through active transport

This absorption process requires energy. What is substance W?

• Water

• Sodium ion

• Oxygen

• Glucose

Which of the following processes involves facilitated diffusion?

• Absorption of mineral ions into plant root hair cells

• Gaseous exchange between the alveoli and blood capillaries

• Fructose is absorbed into the villus via carrier proteins across the plasma

  membrane

• Glucose is transported into cells via carrier proteins

Between A, B, C and D, which point represents the concentration of sucrose solution

which is hypertonic towards potato cell sap?

• A

• B

• C

• D

A housewife noticed that cucumber slices that have been immersed in 0.2% sucrose

solution become hard and rigid after 2 hours. Which process causes the hardening of

the cucumber slices?

• The cucumber cell sap is hypotonic to the sucrose solution.

• Cucumber cell walls are rigid and do not shrink

• The cell wall of the cucumber allows the sucrose to diffuse into the cells

• Higher concentrations of cucumber cell sap cause water to diffuse into the

  vacuoles

Which of the following steps can be used to lower the level of coloured liquid solution

in potatoes?

• Replacing distilled water with a 20% sucrose solution

• Replacing distilled water with a 40% sucrose solution

• Replacing a coloured 20% sucrose solution with a 30% sucrose solution

• Replacing a coloured 20% sucrose solution with a 40% sucrose solution

Which of the following statements shows the similarities between the two processes X

and Y?

• Both processes X and Y involve the transport of substances through the pore

  proteins.

• Both processes X and Y involve the transport of substances against the

  concentration gradient.

• Both processes X and Y involve the transport of substances through the carrier

  proteins.

• Both processes X and Y transport substances across the plasma membrane