Membranes SL - transport

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