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WorksheetsMembranes SL - transport
Total questions: 12
Worksheet time: 6mins
The diagram is a model of one type of movement across a membrane. What is the type of movement?
simple diffusion
facilitated diffusion
exocytosis
active transport
The diagram is a model of one type of movement across a membrane. What is the type of movement?
simple diffusion
facilitated diffusion
osmosis
active transport
Which organelle is involved in generating vesicles destined for the cell membrane?
Golgi apparatus
sER
rER
Lysosome
What type of transport is it?
exocytosis
endocytosis
active transport
pinocytosis
What substance is release that way?
enzyme
steroid hormone
oxygen
starch
This illustration shows mechanism of:
co-transport
proton pump
facilitated diffusion
cytosis
What causes the change of protein pump from its initial state?
phosphorylation
adding Na to the pump
attachment of K to the pump
detachment of Pi from protein
Which of these illustrations show passive transport?
A, C and E
A, C and F
C and D
B and E
Which of these illustrations show transport that disregards concentration gradient?
B, D and E
B and E only
only E
E and F
The salt concentration inside the Paramecium is 1.8 %. The salt concentration in the surrounding medium suddenly drops to 0.2 %. What will be the likely response?
The cell will lose salt to the medium
The contractile vacuole will expel more water
The cell will swell and eventually burst
The membrane will become more permeable to salt
What do diffusion and osmosis have in common?
They only happen in living cells
They require transport proteins in the membrane
They are passive transport mechanisms
Net movement of substances is against the concentration gradient
Which of the following is a feature of exocytosis but not endocytosis?
Secretion
Use of ATP
Vesicle formation
Shape changes of a membrane
