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MOVEMENT OF SUBSTANCES ACROSS
THE PLASMA MEMBRANE
1 Osmosis is the diffusion of water molecules from a region of
A higher water concentration through a semi permeable membrane.B lower water concentration through a semi permeable membrane.
C higher water concentration through a non permeable membrane.D lower water concentration through a non permeable membrane.
2 The figure shows a movement of ions across the plasma membrane. Name theprocess
1
KEMENTERIAN PELAJARAN MALAYSIA
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C
D
A
B
A flaccidB crenationC active transportD passive transport
A red blood cell in h!potonic solution will burst. This phenomena is "nown as
A crenationB flaccidC haemol!sisD plasmol!sis
# $lasmol!sis refers to
A movement of water out of cellB movement of water into cellC movement of o%!gen out of cell
D movement of o%!gen into cell&
' (!pertonic solution is
A a solution without solutesB a solution in which has the same ions of solute as another solution.C a solution in which less ions of solutes is less than another solution.D a solution in which the ions of solute is higher than another solution.
) *igure shows a part of a plasma membrane. +hich component is the h!drophilic head of
phospholipids ,
2
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- A solution has higher concentration compare to the cell sap. This solution is
A h!potonicB h!pertonicC sotonicD turgid
/ +hich of the following is not a component of cell membranes,
A $roteinB 0ipidC Nucleic acidD Carboh!drate
Cell membrane consists mainl! of
A carboh!drate bila!er and protein
B protein bila!er and phospholipids C lipid bila!er and proteins D protein bila!er and carboh!drate
1 The phospholipid molecule of the plasma membrane has
A a h!drophilic head and two h!drophobic tailsB a h!drophobic head and two h!drophilic tailsC a h!drophilic head and a h!drophobic tails
D a h!drophobic head and a h!drophilic tails
11 +hich of the following components can move across plasma membrane b! simplediffusion,
A ions B 3lucose
C 0ipid soluble molecules D +ater soluble molecules
3
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12 *igure shows a red blood cell after has been immerse in a h!pertonic solution.
+hich of the statement e%plain the phenomena,
A water molecules move out from the red blood cell
B water molecule move into the red blood cellC glucose molecule move out from the red blood cellD glucose molecule move into the red blood cell
1 +hich of the following statement is true about plasma membrane,
A 4electivel! permeable.B 0ipid bila!er and protein molecules are static.
C Allows onl! water and glucose molecules to pass through.D The fluid mosaic model is made up a bila!er with amino acids scattered in it.
1# +hich of the following processes involves active transport,
A Absorption a solution in which has the same iones of solute as anothersolution of ions b! root hair cells of a plant.
B Absorption of digested food in the villus.C Absorption of water b! root hair cells of a plant.
D 3as e%change between the alveoli and blood capillaries.
4
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Epidermis
1' *igure shows a strip of a mustard green after it has been immersed in solution 5.
+hich of the following is solution 5,
A .16 salt solution
B Distilled water C 1.'6 sucrose solution D 6 sucrose solution
1) *igure shows the vis"ing tube which filled with distilled water and soa"ed into salt solution.
+hat is the observation after 2 minutes,
A 7is"ing tube will swell. B No change occurred.
C 7is"ing tube will shrun". D 7is"ing tube will burst
5
Beaker
Salt Solution
Distilled water Visking
tube
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length of the strips
1
2
3
Time
1- The figure shows three ) mm strips of potato were immersed into three differentt!pes of solution.
After one hour the length of the strips is recorded and the graph is plotted as below.
+hich of the following shows the correct result,
Distilled water '6 sucrosesolution
26 sucrosesolution
A 1 2
B 1 2
C 2 1
6
Beaker 1 Beaker 2 Beaker 3
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2 *igure shows the structure of a plant cell before and after it has been immersed in solution$.
+hat is solution $ and the process that ta"es place in the plant cell,
21 (ow the water molecules can move into a cell when the cell is immersed in a
distilled water, ===================================================================
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22 3ive two differences between the passive transport and active transport.
4olution $ $rocess
A Distilled water $lasmol!sis
B Distilled water Deplasmol!sis
C 16 sucrose solution $lasmol!sis
D 1'6 sucrose solution (aemol!sis
!
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2 $redict what will happen to red blood cell if it is immersed into h!pertonic solution. 3ive the reason.
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2# Describe wh! the plant become wilt if the farmer use e%cessive fertili:er.
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2' 9%plain how we can preserve fish for several wee"s. >se the "nowledge that !oulearns in this chapter.
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