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WorksheetsModule 3 review
Total questions: 33
Worksheet time: 24mins
It consists of a "sea" of phospholipids in which embedded substances float.
(a)
Way in which the lipids that form the cell or plasma membrane are organized.
Phospholipids bilayer
transport proteins
Selective permeability
A difference in solute concentration between two regions is called
(a)
Solute molecules tend to move down their concentration gradient from a region of higher concentration to one of lower concentration.
true
false
The pass of water across a semipermeable membrane is called:
Difussion
Osmosis
Endocytosis
Exocytosis
Which particles use simple difussion to cross the cell membrane?
Glucose and aminoacids
Oxygen and carbon monoxide
Carbon monoxide and water
water and glucose
In passive transport the cell uses energy, because the movement of materials through the membrane goes against a concentration gradient.
true
false
Simple difussion, osmosis and facilitated difussion are example of (a) transport
Pinocytosis, phagocytosis and exocytosis are examples of (a) transport
The solution has the same solute concentration as the interior of the cell. Under these conditions, the water that enters and leaves is kept in equilibrium. Cells in this solutions maintain a constant shape and size
isotonic
hypotonic
hypertonic
Solution has a higher concentration of solutes than the interior of the cells. Under these conditions, the amount of water that comes out is greater than that the water that enters. Cells in this conditions will tend to dehydrate and their membrane will contract (plasmolysis)
hypertonic
hypotonic
isotonic
Solution has a lower concentration of solutes than the interior of cells. Under these circumstances the water that enters is greater than that that leaves. Cells tend to swell, even exploding (turgent)
Hypotonic
hypertonic
isotonic
In this type of transport, molecules diffuse across the plasma membrane with assistance from membrane proteins, such as channels and carriers.
facilitated difussion
pinocytosis
exocytosis
endocytosis
The process of cell transport that uses small vesicles to get rid of waste products.
Pinocytosis
Exocytosis
Endocytosis
Phagocytosis
The mechanism by which the cell engulfs other cells like bacteria to destroy them is known as:
Phagosytosis
Pinocytosis
Exocytosis
Sodium-potassium bomb
The mechanism cells use to absorb small droplets of liquids like fat is called:
Pinocytosis
Phagocytosis
Exocytosis
Sodium-potassium bomb
