Specialised cells (Edexcel GCSE Biology): Flashcards
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What are specialised cells?
What are specialised cells?
Cells with structure adapted to their function
Function of ciliated epithelial cells
Function of ciliated epithelial cells
Move materials in 1 direction along tissue surface
What are cilia?
What are cilia?
Tiny hair-like structures on ciliated epithelial cells
Where are ciliated epithelial cells found?
Where are ciliated epithelial cells found?
Lining of the respiratory tract
How do cilia move?
How do cilia move?
Beat in coordinated wave-like motion
Why does sperm have a haploid nucleus?
Why does sperm have a haploid nucleus?
Has half chromosomes so correct number after fertilisation
Function of acrosome in sperm
Function of acrosome in sperm
Contains enzymes to penetrate egg's outer layers
Function of mitochondria in sperm
Function of mitochondria in sperm
Release energy for sperm to swim
Function of sperm tail (flagellum)
Function of sperm tail (flagellum)
Enables swimming with whip-like motion
Size of sperm cells
Size of sperm cells
Smallest cells in human body
Function of egg cell cytoplasm
Function of egg cell cytoplasm
Contains nutrients for early embryo growth
Type of nucleus in egg cell
Type of nucleus in egg cell
Haploid nucleus with half the chromosomes
What happens to egg membrane after fertilisation?
What happens to egg membrane after fertilisation?
Changes to prevent more sperm entering
Size of egg cells
Size of egg cells
One of the largest cells in human body
What happens in sexual reproduction?
What happens in sexual reproduction?
Egg nucleus fuses with sperm nucleus