NEW
Font size
WorksheetsBIOLOGY FORM 4 - MOVEMENT OF SUBSTANCE ACROSS THE OLASMA MEM
Total questions: 20
Worksheet time: 20mins
Diagram 1 shows the phospholipid bilayer which forms the plasma membrane.
What are the parts labelled P and Q?
P : Lipophobic head
Q: Lipophilic tail
P : Lipophilic head
Q: Lipophobic tail
P : Hydrophilic head
Q: Hydrophobic tail
P : Hydrophobic head
Q: Hydrophilic tail
Diagram 2 shows a structure of plasma membrane.
What is the function of X?
Act as the barrier to separate the inner and outer part of the cell.
Help to transport the substances in or out from the cell membrane.
Stabilise and strengthen the plasma membrane to become more flexible.
To provide a fixed shape to the cell.
What is X?
Carrier Protein
Phospholipid
Pore protein
Glycoprotein
Which of the following is the best description about a selectively permeable membrane?
Only allows water molecules to pass through it.
Only allows water soluble molecules to pass through it.
Only allows certain molecules to pass through it
Only allows certain molecules to pass into the cell but not out of it.
I and III
II and IV
I, II and IV
I, II, III and IV
Diagram 4 shows the movement of molecules across a plasma membrane by process W.
Which of the following is process W?
Facilitated diffusion
Active transport
Simple diffusion
Osmosis
Diagram 5 shows an experiment to investigate the movement of water molecules across a selectively permeable membrane from P to Q.
Which of the following is true about the movement of water at the end of the experiment?
The rate of water molecules diffusing from P to Q is higher than from Q to P.
The rate of water molecules diffusing from Q to P is higher than P to Q.
No water molecule diffuses from P to Q.
The rate of water molecules diffusing from P to Q and from Q to P is the same.
Diagram 6 shows three substances P, Q and R passing through the plasma membrane of a cell.
A
B
C
D
I and II only
II and IV only
I, II and III only
I, II, III and IV
Diagram 7 shows an experiment carried out by a group of students.
What is the characteristic shown by L?
Less permeable
Semi-permeable
Non-permeable
Fully permeable
Diagram 8 shows the set-up of apparatus to demonstrate a process.
Which of the following statements is correct about the experiment?
The water level in the drinking straw drops.
The water level in the beaker does not change.
The water level in the drinking straw remains the same.
The water level in the drinking straw rises.
Diagram 9 shows a plant cell which is immersed in distilled water.
which of the following diagrams shows the condition of the cell after it has been immersed in a hypertonic solution?
Diagram 10 shows processes X and Y which occur when red blood cells are immersed in distilled water and concentrated salt solution respectively.
Which of the following are processes X and Y?
X : Haemolysis
Y : Plasmolysis
X : Haemolysis
Y : Crenation
X : Crenation
Y : Haemolysis
X : Plasmolysis
Y : Crenation
Diagram 11 shows a longitudinal strip cut of a herbaceous stem before it is immersed in a 30 percent sucrose solution.
Which of the following diagrams shows the appearance of the strip after 30 minutes?
1.14g
1.40g
1.58g
1.79g
Diagram 12 shows the movement of water through process P in the root hair to the cortex cell in the root.
Pinocytosis
Active transport
Phagocytosis
Osmosisi
Which of the following is the result when a red blood cells are immersed in 1.5 percent sodium chloride solution for 5 minutes?
Diagram 13 shows the condition of a plant cell before and after being immersed in solution X.
What is solution X and the process involved after being immersed in solution X?
Solution X : Isotonic
Process : Plasmolysis
Solution X : Hypertonic
Process : Deplasmolysis
Solution X : Hypotonic
Process : Deplasmolysis
Solution X : Hypotonic
Process : Incipient Plasmolysis
Why does salted fish remain preserved after a few months?
The growth of bacteria is inhibited
The pH of the solution used is low.
The water content in the fish is maintained
The water molecules enter the fish cells by osmosis.
Diagram 14 shows a method of preserving vegetable.
Which of the following explains why the vegetable can last longer?
Water diffuses out from the vegetable tissues into the salt solution by osmosis.
The salt causes the vegetable to turn alkaline.
The water molecules diffuse into the vegetable by osmosis.
The bacteria are deplasmolysed.
