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13 Cards in this Set

  • Front
  • Back
QUESTION:
What are the 2 substances that ENTER into the cell?
ANSWER:
FOOD AND OXYGEN
QUESTION: What is the type of material that is RELEASED from the CELL into it's environment
ANSWER:
WASTE AND MATERIALS
QUESTION:
This controls what and ENTERS and LEAVES the cell
ANSWER:
the CELL MEMBRANE
QUESTION:
This property that ALLOWS certain things to ENTER and LEAVE the cell is known as
ANSWER:
SELECTIVE PERMEABILITY
QUESTION:
This is the movement of particles from an area where there are MANY to an area where there are FEW
ANSWER:

DIFFUSION
QUESTION:
This occurs when molecules of a substance are spread EVENLY throughout a space
ANSWER:

EQUILIBRIUM
QUESTION:
this is the DIFFUSION of WATER through a cell membrane
ANSWER:

OSMOSIS
QUESTION:
These molecules move from an area where there is a LARGER number to where there is a SMALLER number
ANSWER:
WATER MOLECULES
QUESTION:
What happens ti cells if they AREN'T surrounded by relatively PURE WATER ?
ANSWER:

they will loose water and wilt
QUESTION:
What would happen to a cell if it LOST TOO MUCH WATER?
ANSWER:

cell membrane would pull away from the the cell wall
QUESTION:
why did the stalk of celery wilt?
ANSWER:
because the cell membrane pulled away from the cell wall ( more water left the cells)
QUESTION:
What could you do to make the the celery "firm" again?
ANSWER:

put the celery back into PURE WATER so the cells can move back in and EXPAND to become FIRM again.
QUESTION:
DIFFUSION and OSMOSIS occur WITHOUT the use of energy by the cell. These are 2 examples of what
ANSWER:
PASSIVE TRANSPORT
and
ACTIVE TRANSPORT