cell structure Flashcards
The Cell
The CELL is the smallest unit of matter that
can carry out all the PROCESSES OF LIFE.
Where do cells come from
Cells come only from reproduction of
existing cells.
organelle
a cell component that
PERFORMS SPECIFIC FUNCTIONS
FOR THE CELL.
what do cells contain
organelles
Organelles examples
- Cell membrane
- Nucleus
- Mitochondria
- Chloroplast
- Ribosomes
- DNA
- Cell Wall
- Vacuole
Animal Cells contain the following structures
Cell Membranes
Mitochondria
Nucleus
Cytoplasm
what can be seen under the light microscope in an animal cell
Only the cell membrane, the cytoplasm and the
nucleus can be seen under the light microscope.
what are animal cells surrounded by
cell membrane
protoplasm
living parts of a cell
where are the rpotoplams located
they are enclosed within
the cell membrane
what does the protoplasm contain
the nucleus
and cytoplasm
what are plant cells enclosed by
cell wall, which is made of cellulose
what is cellulose
Cellulose is a strong carbohydrate
what does the cell wall give to the cell plant
strength
where is the cell membrane found in the plant cell
The cell membrane is found inside the
cell wall
what is the fluid inside a vacuole called
sap
what is cell sap
Cell sap is a solution of
salts, sugars and
pigments. They also
give the cell strength
and shape
what do green plants contain
chlorophyll
Cell ultrastructure
a detailed structure as
seen under an electron microscope
Cell Membranes are made up of
phospholipids and proteins
The phospholipids and proteins are in
constant
motion.
Membranes are said to be
fluid
Functions of Cell Membranes
- Separate the cell organelles and
cytoplasm from the outside - Semi permeable - allows some
molecules freely into and out and others
to enter
* Membranes give some support to the cell
* Membranes recognise molecules that
touch them
the nucleus
A large organelle near the center of the cell
