WorksheetsSB1d- Cell Transport
Total questions: 13
Worksheet time: 1hrs 5mins
What is the diffusion of water through a semi-permeable membrane called?
active transport
facilitated diffusion
endocytosis
osmosis
Which of the following best describes diffusion?
the movement of a substance through a phospholipid bilayer
the movement of a substance in water only
the movement of a substance from high concentration to low concentration
the movement of a substance from low concentration to high concentration
Which of the following best describes the cell membrane?
a waterproof layer of polysaccharides connected by short chains of amino acids
a web of protein fibers
a bilayer of phospholipids
a thick layer of proteins and carbohydrates
How are molecules that are too large to be moved through the cell membrane transported into the cell?
osmosis
exocytosis
endocytosis
diffusion
If the concentration of sugar is lower outside the cell than inside the cell, which of the following will happen by osmosis?
Water will move into the cell
Sugar will move into the cell
Water will move out of the cell
Sugar will move out of the cell
What type of passive transport occurs when transport proteins move sugars and other polar molecules in and out of the cell?
endocytosis
facilitated diffusion
osmosis
simple diffusion
Active transport can be used to transport substances from ___ to ___ concentrations.
high; low
low; high
large; small
equilibrium; gradient
Which of the following best describes a concentration gradient?
the movement of substances from high concentrations to low concentrations
a difference of in amount of particles between two areas
the random motion of particles
the state in which the concentrations of a substance are equal on both sides of a membrane
If a concentration gradient is present, substances will naturally diffuse from ___ concentrations to ___ concentrations.
high; low
low; high
equal; low
none of the above
Which of the following describes cell environments that are high in solutes in relation to the inside of the cell.
hypotonic
hypertonic
isotonic
prokaryotic
Which of the following describes cell environments that are equal in the amount of solutes in relation to the inside of the cell?
hypotonic
hypertonic
isotonic
eukaryotic
What will happen to a human cheek cell placed in salt water?
Water will move into the cell.
Water will move out of the cell.
Water will neither move into nor out of the cell.
Water will move both into and out of the cell.
What happens to the rate of diffusion once equilibrium has been reached?
The net rate of diffusion becomes zero.
The net rate of diffusion increases.
The net rate of diffusion decreases.
The net rate of diffusion cannot be determined.
