Fill in the gaps:
All cells are surrounded by
______. In __________
cells, many of the _______
are surrounded by ______
too.
2.1
2B
,All cells are surrounded by
membranes.
In eukaryotic cells, many of the
organelles are surrounded by
membranes too.
(Membranes around organelles
divide the cell into different
compartments (act as a barrier
between organelle and
cytoplasm))
,Give the three main
functions of cell-
surface/plasma
membranes.
2.1
2B ZQ
, • Control the transport of
substances into/out of
cells/organelles
• Act as a receptor site to
recognise chemicals (which
need to enter/leave cell or
organelle)
• To separate off the cell
from the environment
All cells are surrounded by
______. In __________
cells, many of the _______
are surrounded by ______
too.
2.1
2B
,All cells are surrounded by
membranes.
In eukaryotic cells, many of the
organelles are surrounded by
membranes too.
(Membranes around organelles
divide the cell into different
compartments (act as a barrier
between organelle and
cytoplasm))
,Give the three main
functions of cell-
surface/plasma
membranes.
2.1
2B ZQ
, • Control the transport of
substances into/out of
cells/organelles
• Act as a receptor site to
recognise chemicals (which
need to enter/leave cell or
organelle)
• To separate off the cell
from the environment
