Font size
WorksheetsCHAPTER 3 MOVEMENT OF SUBSTANCES ACROSS PLASMA MEMBRANE
Total questions: 20
Worksheet time: 14mins
Name this structure
cell wall
phospholipid bilayer
lipid layer
mosaic
Main components of phospholipid bilayer
pore protein and carrier protein
glycoprotein and carrier protein
phospholipid and proteins
glycogen and proteins
carrier protein
pore protein
Which of the following is the characteristic of plasma membrane?
Not permeable
Fully permeable
Semi permeable
Less permeable
Movement of substances from the higher concentration region to the lower concentration region
active transport
passive transport
Which substances can easily diffuse through the phospholipid bilayer without using the pore and carrier protein?
glucose
amino acids
vitamin A
oxygen
water
Which part repels water?
hydrophilic head
hydrophobic tail
What is the function of cholesterol in the plasma membrane?
To facilitated diffusion of mineral ions
To provide energy
To stabilize the fluidity
To protect phospholipid bilayer
Type of transport
active transport
simple diffusion
facilitated diffusion
osmosis
A process of water molecules diffuse from a region of low solute concentration to a region of high solute concentration through plasma membrane
active transport
simple diffusion
facilitated diffusion
osmosis
Type of transport
active transport
simple diffusion
facilitated diffusion
osmosis
Which of the following involves active transport?
Absorption of nutrient through villi of small intestines
Absorption of mineral salts at root hair
Evaporation of water vapors from stomata
Secretion of sweat by sweat glands
Why this type of transport needs ATP?
To change the concentration gradient
To change the shape of carrier protein
To enlarge the pore of protein
To activate enzyme
Haemolysis
Crenation
Plasmolysis
Deplasmolysis
A is hypotonic compared to B.
A is hypertonic compared to B
B is hypotonic compared to A.
B is hypertonic compared to A.
What causes the change from (a) to (b)?
Plant cells immersed in hypotonic solution
Plant cells immersed in hypertonic solution
Plant cells immersed in isotonic solution
What are the causes of plant to wilt?
Excess water
Excess fertiliser
Lack of water
Lack of fertiliser
1. Vacuole shrinks
2. Plasma membrane and cytoplasm are pulled away from the cell wall
Turgid
Crenation
Deplasmolysis
Plasmolysis
A few potato strips (all were 2.0 cm) were immersed in solutions with different concentration. Which of the following sizes show that the strips were immersed in hypotonic solution?
1.8 cm
1.9 cm
2.0 cm
2.1 cm
2.2 cm
Sugar and salt solution is hypertonic towards the fruit cells. This causes the water molecules ____________ and fruit becomes _______________
diffuse in , dehydrated
diffuse out , dehydrated
diffuse in , hydrated
diffuse out , hydrated
