2005
4551/1 Movement of substances across the plasma membrane Biology
Paper 1
CHAP 3: MOVEMENT OF SUBSTANCES ACROSS THE PLASMA MEMBRANE
Year200320042005200620072008
Quantity321423
YEAR 2003
1. Figure 3 shows a comparison of ion concentration in pond
water and in the cell sap of Nitella sp.
Which process causes the ion concentration in Nitella sp. to be
higher than that in pond water?
A Osmosis
B Plasmolysis
C Active transport
D Passive transport
2.A student soaked a duck egg in a saturated salt solution.
After a few days, he found that the egg tasted salty.
Which of the following statements explain this phenomenon?
IThe egg shell and membrane are permeable to salt
IISalt particles diffuse into the egg
IIISalt particles enter the egg by active transport
IVSaturated salt solution is hypertonic to the egg
A I and IV only
B II and III only
C I, II and IV only
D I, II, III and IV3.Figure 26 shows an experiment on the
movement of molecules across a semi-permeable membrane
What are solutions P, Q and R
PQR
A1 mol dm-3 sucrose solutionDistilled water0.5 mol dm-3 sucrose
solution
B1 mol dm-3 sucrose solution0.5 mol dm-3 sucrose
solutionDistilled water
CDistilled water1 mol dm-3 sucrose solution0.5 mol dm-3 sucrose
solution
DDistilled water0.5 mol dm-3 sucrose solution1 mol dm-3 sucrose
solution
YEAR 2004
1. What are the processes involved in the movement of water and
mineral ions into root hairs?
Water
Mineral ions A Osmosis
Active transport
B Osmosis
Facilitated diffusionC Facilitated diffusion
OsmosisD Active transport
Osmosis2. The diagram shows diffusion through a partially
permeable membrane.
What are X and Y?
XYA Sucrose solution 20%Distilled water
B Distilled waterDistilled water
C Sucrose solution 20%Sucrose solution 20%
D Distilled waterSucrose solution 20%YEAR 20051. The graph shows
the changes in mass of potato strips immersed in different
concentrations of sucrose solution.
Based on the above graph, which of the following concentrations
of sucrose solution should be used so that a flaccid potato strip
regains its turgidity?
A 1.5 g per 100 mlC 3.5 g per 100 m/
B 2.5 g per 100 m/D 4.5 g per 100 m/YEAR 20061. Which of the
following onion cells were immersed in a hypotonic solution?
2. Diagram 2 shows an experiment to investigate the movement of
substances through a visking tube.
What is the process that takes place in Diagram 2?
A Osmosis
B Active transportC Facilitated diffusionD Passive
transportation3. Cucumber slices are immersed in 0.1% solution.
After 3 hours, the slices are found to be turgid and hard.
Which of the following statements explains this phenomenon?
A The cucumber cell wall prevents it from shrinking.B The cell
sap is hypotonic towards the sucrose shrinkingC The high
concentration of the cell sap in the vocule causes water to diffuse
inD The cucumber cell wall allows the sucrose molecules to diffuse
into the cell4. A plant cell is immersed in distilled water.Which
of the following is true about the movement of water molecules in
the early stage?A The rate of water molecules exiting the cell is
higher than entering the cellB The rate of water molecules entering
the cell is higher than exiting the cell
C No water molecules are entering or exiting the cellD The rate
of water molecules entering and exiting the cell is the same YEAR
20071. Diagram 2 shows a plant cell which has been put into a
particular solution.
Which is experienced by the cell?
A Plasmolysis
B Haemolysis
C Deplasmolysis
D Crenation
2. Diagram 3 is a graph showing the result of an experiment to
determine the concentration of the cell sap of potatoes.
At which point A, B, C or D, is the concentration of the cell
sap of the potatoes?YEAR 2008
1. A cell is immersed in distilled water for 20 minutes. It is
then taken out and immersed in 30% sucrose solution.
Table I shows the observed condition of the cell.
If the cell is put back into the distilled water for 20 minutes,
which condition of the cell would be expected?
2 Diagram 2 shows the movement of molecule X across the plasma
membrane through process Y.
What is process X?A. Osmosis
B. Simple diffusion
C. Active transport
D. Facilitated diffusion
3. Diagram 3 shows the initial level of 10% sucrose solution in
a capillary tube before an experiment.
Which graph shows how the level of sucrose solution in the
capillary tube changes during the experiment?
Figure 3
Figure 26
PAGE 8Answer To Score Jabatan Pelajaran Perak 2009