Specilisation In Animal Cells Flashcards
What is cell differentiation?
When an unspecialised cells becomes specialised
What is specialisation?
Cells have adapted to carry a specific function
What adaptations does a sperm cells have?
Long tail to allow cell to travel easily to ovum
Lots if mitochondria for energy to allow sperm to flow faster
Acrosomes have enzymes to break the outer layer of egg and fertilise
What adaptations does nerve cells have?
Axons to carry electrical impulses
Myelin to insulate axon and speed up transmission of nerve impulses
Synapses to pass from one nerve to another
Dendrites to increase surface area so other nerve cells can connect easily
What adaptations does a muscle cell have?
Protein fibres to change length of muscle
Mitochondria for energy for muscle contraction
Explain how villi are adapted for efficient absorption of sugar molecules.
Microvilli to increase surface area
One cell thick so capillaries closer to surface so short pathway
Good blood supply
Mitochondria so respiration takes place where energy is transferred so active transport requires energy
How are lungs adapted for efficient gas exchange?
Alveoli to increase surface area
Good blood supply
