1.9 - Specialised Cells & Differentiation Flashcards
Which of the following specialised cells is adapted for transmitting messages from one part of the body, to another?
a- Muscle cells
b- Sperm cells
c- Nerve cells
c, Nerve cells
Explain how a sperm cell is adapted for its role.
Its role is to deliver genetic material to an egg cell to fertilise it
It has half as much genetic material as a normal cell, so that the sperm and egg together will have the normal amount
It has lots of mitochondria to provide the energy for movement
It has a flagellum to allow it to swim to reach the egg
What is ‘differentiation’?
The process by which cells become specialised
Which two of the following cells are adapted to their roles by having a large surface area?
Red blood cells
Root hair cells
cells that are adapted to perform a particular function are called what
cells?
specialised cells
Heart muscle tissue has to be able to beat continually without stopping. What adaptation would you expect heart cells to have?
A large number of mitochondria
this is because heart cells need lots of mitochondria to provide the energy required for respiration.
Which of the following specialised cells is adapted to their role by having lots of mitochondria?
a- Palisade mesophyll cells
b- Guard cells
c- Skin cells
d- Sperm cells
d, Sperm cells
