Life Processes Question Preview (ID: 47288)


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If the external of a living cell has a greater concentration of salt than the cytoplasm within the cell, the cell will tend to
a) divide
b) extrete salt
c) increase in size
d) lose water

The net flow of materials through the membrane of a cell against a concentration gradient is known as
a) active transport
b) circulation
c) passive transport
d) transplantation

Water and minerals move from the soil into a plant by the process of
a) diffusion only
b) active transport only
c) passive transport and hydrolysis
d) both diffusion and active transport

The process of osmosis would explain the net movement of water into a cell if the percentage of
a) water was 90% inside the cell and 95% outside of the cell
b) water was 95% inside and 90% outside
c) water was thicker outside than the water inside
d)

After a cookie has been digested, glucose molecules enter the bloodstream by the process of
a) phagocytosis
b) diffusion
c) ingestion
d) egestion

Which process utilizes cellular energy to move particles through a membrane?
a) osmosis
b) passive diffusion
c) active transport
d) transpiration

The process of water molecules moving from a higher concentration to a lower concentration is called
a) active transport
b) osmosis
c) respiration
d) energy

If an elodea leaf was placed on a wet mount what change would occur after a salt solution was added ?
a) The cell wall would break
b) The cell membrane would expand and burst
c) The leaf would turn brown
d) The cell membrane would pull away from the wall and would shrink

True or False. Osmosis may occur in either direction across the cell membrane.
a) True
b) False
c)
d)

The process where molecules move from an area of higher concentration to a lower concentration is known as
a) photosynthesis
b) passive transport
c) diffusion
d) both 2 and 3

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