Question 1
Question
Osmosis is the [blank_start]diffusion[blank_end] of [blank_start]water molecules[blank_end] from a region of [blank_start]high water potential[blank_end] to a region of [blank_start]low water potential[blank_end], through a [blank_start]selectively permeable membrane[blank_end].
Question 2
Question
Water potential of an animal cell in pure water/dilute solution ([blank_start]hypotonic[blank_end] to the cell) causes [blank_start]haemolysis[blank_end]. Water potential of an animal cell in a concentrated solution ([blank_start]hypertonic[blank_end] to the cell) causes [blank_start]crenation[blank_end]. Water potential of an animal cell in a solution with the same concentration ([blank_start]isotonic[blank_end] to the cell) causes [blank_start]no change[blank_end].
Answer
-
hypotonic
-
hypertonic
-
isotonic
-
haemolysis
-
no change
-
crenation
-
hypertonic
-
hypotonic
-
isotonic
-
crenation
-
haemolysis
-
no change
-
isotonic
-
hypotonic
-
hypertonic
-
no change
-
crenation
-
haemolysis
Question 3
Question
The equation for water potential in a plant cell is:
water potential = pressure potential - solute potential
Question 4
Question
[blank_start]Solute potential[blank_end] is the [blank_start]reduction[blank_end] in [blank_start]water potential[blank_end] due to the presence of [blank_start]solute[blank_end] molecules.
Answer
-
Solute potential
-
Water potential
-
reduction
-
addition
-
change
-
increase
-
decrease
-
water potential
-
solute potential
-
solute
-
water
Question 5
Question
Label the diagram:
Answer
-
Facilitated diffusion
-
Active Transport
-
Passive diffusion
Question 6
Question
Which type of molecules needs to be 'assisted' in crossing membranes?
Question 7
Question
The equation for water potential in an animal cell is:
water potential = solute potential
Question 8
Question
[blank_start]Intrinsic[blank_end] proteins exit across both [blank_start]phospholipid bilayers[blank_end]. Some are [blank_start]carriers[blank_end] and others allow [blank_start]active transport[blank_end] of [blank_start]ions[blank_end]. [blank_start]Extrinsic[blank_end] proteins are located in [blank_start]either surface[blank_end] of the [blank_start]phospholipid bilayer[blank_end]. These provide [blank_start]structural support[blank_end] and [blank_start]recognition sites[blank_end].
Answer
-
Intrinsic
-
phospholipid bilayers
-
carriers
-
active transport
-
ions
-
Extrinsic
-
either surface
-
phospholipid bilayer
-
structural support
-
recognition sites
Question 9
Question
Which of these do NOT affect the rate of diffusion?
Answer
-
Concentration gradient
-
Size of the diffusing molecules
-
Nature of the diffusing molecules
-
Temperature
-
Thickness of the exchange
-
Condition of the diffusing molecules
Question 10
Question
[blank_start]Water potential[blank_end] is the [blank_start]measure[blank_end] of the [blank_start]free energy[blank_end] of [blank_start]water molecules[blank_end] and is the [blank_start]tendency[blank_end] for [blank_start]water[blank_end] to [blank_start]move[blank_end].
Answer
-
measure
-
tendency
-
water
-
move
-
Water potential
-
free energy
-
water molecules
Question 11
Question
Label the diagram of a plant cell:
Answer
-
Plasmolysed
-
Flaccid
-
Turgid
-
Plasmolysed
-
Flaccid
-
Turgid
-
Plasmolysed
-
Flaccid
-
Turgid
Question 12
Question
Rate of diffusion equation:
[blank_start]rate of diffusion[blank_end] = ([blank_start]surface area[blank_end] x [blank_start]difference in concentration[blank_end])/ [blank_start]length of diffusion pathway[blank_end]
Question 13
Question
What factors affect the permeability of water?
Question 14
Question
Passive diffusion is the [blank_start]passive movement[blank_end] of a [blank_start]molecule[blank_end]/[blank_start]ion[blank_end] down a [blank_start]concentration gradient[blank_end] from a region of [blank_start]high concentration[blank_end] to a region of [blank_start]low concentration[blank_end].
[blank_start]Facilitated[blank_end] diffusion is the [blank_start]movement[blank_end] of molecules/ions [blank_start]down[blank_end] a concentration gradient using protein [blank_start]carriers[blank_end]/[blank_start]channels[blank_end].
Answer
-
passive movement
-
molecule
-
ion
-
concentration gradient
-
high concentration
-
low concentration
-
movement
-
down
-
carriers
-
channels
-
Facilitated
Question 15
Question
Where does active transport takes place?
Answer
-
In muscle contraction
-
in nerve impulse transmission
-
In the absorption of glucose in the kidney
-
In the mineral uptake in plant root hair cells
-
In transpiration
Question 16
Question
Active transport is the [blank_start]movement[blank_end] of [blank_start]molecule[blank_end] or ion across a [blank_start]membrane[blank_end] [blank_start]against[blank_end] a [blank_start]concentration gradient[blank_end], using [blank_start]energy[blank_end] from the [blank_start]hydrolysis[blank_end] of [blank_start]ATP[blank_end] made by the cell in [blank_start]respiration[blank_end].
Answer
-
movement
-
molecule
-
against
-
membrane
-
concentration gradient
-
energy
-
hydrolysis
-
ATP
-
respiration
Question 17
Question
The process of Co-Transport:
1) Sodium ions are [blank_start]transported[blank_end] out of the cell into the blood, via active transport.
2) This creates a [blank_start]concentration gradient[blank_end] between the number of sodium ions [blank_start]inside and outside[blank_end] of the cell.
3) [blank_start]2[blank_end] sodium ions are attached to the binding sites on co-transport carrier proteins, along with [blank_start]1[blank_end] glucose molecule on the glucose binding site.
4) Protein [blank_start]carrier[blank_end] changed shape and moves the glucose molecule and sodium ions inside of the cell.
5) The glucose molecule and sodium ions move to opposite side of the cell, [blank_start]separately[blank_end].
6) Glucose diffuse to the blood stream by [blank_start]facilitated diffusion[blank_end], along a concentration gradient.
7) Sodium ions goes into the blood stream through a [blank_start]sodium/potassium[blank_end] pump, by [blank_start]active transport[blank_end], against a concentration gradient.
Answer
-
transported
-
concentration gradient
-
inside and outside
-
2
-
1
-
carrier
-
channel
-
separately
-
as one
-
facilitated diffusion
-
passive diffusion
-
sodium/potassium
-
sodium/lithium
-
active transport