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ANIMAL CELLS
LESSON OBJECTIVES
1. Label and identify the major
structures that make up a
typical animal cell.
2. Describe what these structures
do.
3. Name and describe how 2
specialised animal cells are
adapted for their job.
MINI PLENARY Question 1
?
a. cytoplasm
b. cell wall
c. chloroplast
d. cell membrane
MINI PLENARY Question 2
?
a. cytoplasm
b. sap vacuole
c. chloroplast
d. nucleus
MINI PLENARY Question 3
?
a. cytoplasm
b. sap vacuole
c. chloroplast
d. nucleus
LESSON OBJECTIVES
1. Label and identify the major
structures that make up a
typical animal cell.
2. Describe what these structures
do.
3. Name and describe how 2
specialised animal cells are
adapted for their job.
ORGANELLES
cell membrane
controls what
enters and
leaves the cell
cytoplasm
metabolic
(chemical)
reactions
occur here
nucleus
contains the
DNA and so
controls the cell
DNA
contains the
coded
instructions to
make proteins
Cell organelles
• Nucleus: The “brains” of the
cell, the nucleus directs cell
activities and contains genes.
• A cell membrane controls
what enters and leaves the
cell.
• Cytoplasm, where most of the
chemical reactions take place.
Mitochondria
• Found in the
cytoplasm.
• Carry out
aerobic
respiration to
release
energy.
Ribosomes
MINI PLENARY Question 4
What is the function of the cell membrane?
1.
2.
3.
4.
Supports and protects the cell
Controls the cell
Controls what enters and leaves the cell
Metabolic reactions occur here
MINI PLENARY Question 5
What is the function of the
nucleus?
1.
2.
3.
4.
Supports and protects the cell
Controls the cell
Controls what enters and leaves the cell
Metabolic reactions occur here
LESSON OBJECTIVES
1. Label and identify the major
structures that make up a
typical animal cell.
2. Describe what these structures
do.
3. Name and describe how 2
specialised animal cells are
adapted for their job.
SEX CELLS: GAMETES
AN EGG CELL
A SPERM CELL
Nucleus containing 23 chromosomes
The Zygote
• Fertilised Egg cell.
• Division forms a ball of
genetically Identical
cells.
• The first 8 cells are
Embryonic stem cells.
They are UNSPECIALISED.
SPECIALISED CELLS
How many different
specialised cells can you name,
in animals.
•
•
•
•
Sex cells- Eggs and sperm
Neurones/Nerves- brain.
Muscle cells
Blood cells, white and red
RED BLOOD
CELL
SPERM CELL
NERVE
CELL
WHITE BLOOD
CELL
MUSCLE
CELL
Sperm cell
Head contains enzymes & nucleus
•Designed to Fertilise
eggs.
•Found in the Testes
Tail
•A sperm is small and has a
long tail that provides
movement so it can swim and
find an egg cell.
• The head contains enzymes
which allow it to digest into
an egg cell and join with it.
Red blood cells transport oxygen
cell surface membrane
cytoplasm contains
no nucleus
allows more room for
haemoglobin
cytoplasm contains
haemoglobin
haemoglobin is a
protein which carries
the oxygen molecules
bi-concave disc shape
increases surface area
over which absorption of
oxygen can occur
Muscle cells contract and enable
movement of the body
muscle
Muscle cells have
many nuclei
cell surface membrane
nucleus
The strands of protein
slide over each other
making the muscle cell
(fibre) shorter and causing
the muscle to contract
protein strands
Ciliated EPITHELIAL cells move bacteria
and dust away from the lungs
cilia
Cilia are small
extensions of the cell.
They beat
rhythmically to sweep
mucus, which has
trapped bacteria and
dust, away from the
lungs
nucleus
magnification X3000
LESSON OBJECTIVES
1. Label and identify the major
structures that make up a
typical animal cell.
2. Describe what these structures
do.
3. Name and describe how 2
specialised animal cells are
adapted for their job.