Specialised Cells Flashcards
What are specialised cells?
Cells which have adapted particular structures to perform a specific function
How are sperm+egg cells specialised?
They are specialised for reproduction. They are our sex cells known as genetes
How many chromosomes are in the female dna?
23
What the main function of the egg cell?
Main function is to carry the female DNA and to nourish the developing embryo in the early stages. So the egg cell contains huge food reserves (nutrients for the embryo)
How many chromosomes are in the male DNA?
23
What a flagellum?
A long tail to help with swimming
What is acresome used for ?
Digestive enzymes to break down the wall of the egg
What is the stream- liked head used for ?
Allows it to swim faster because there is less drag
What the speed cell used for ?
The sperm cell gets male DNA to the female DNA by fertilising the egg cell
What part of the flagellum helps the sperm cell swim to the egg?
It has a long tail + a stream liked head
How are red blood cells adapted ?
Adapted to carry oxygen to energy cell in the blood
Why is a red blood cell biocarncare shaped?
(Both sides of the cells curve inwards), which gives the red blood cell a big surface area for absorbing oxygen
How else does the shape help the red blood cell?
The shape also helps the red blood cells pass smoothly along capillaries (tiny blood vessels), so they reach body cells
How are sperm+egg cells specialised?
Specialised for reproduction
Why is there lots of mitochondria in a sperm cell?
.lots of mitochondria
.lots of aerobic respiration
.lot of energy released to help the sperm swim
Why do red blood cells not have a nucleus?
So it has a greater surface area this means more space for haemoglobin for more oxygen to bind