Male gametes that swim to the female gamete (egg) and join with it in the process of fertilisation
Sperm Cell
Good swimmers with powerful tails
Contain lots of mitochondria to provide energy for movement
Have an acrosome which contains enzymes to digest the outside of the egg
Nerve Cell
Cells that carry electrical signals between the brain and different parts of the body
Nerve Cell
Some are over 1 metre long
Contain lots of dendrites to allow them to connect to other cells
Muscle Cell
Cells that are long and narrow, lying parallel to each other, containing fibres (protein filaments) that slide against each other when a muscle contracts
Root Hair Cell
Cells adapted for the absorption of minerals from the soil
Root Hair Cell
Have lots of mitochondria to provide energy for active transport
Have hairs which increase the surface area of the cell, increasing the rate of diffusion
Xylem Cell
Cells that carry water from the roots to the leaves
Xylem Cell
Essentially hollow tubes as the cells within them have died
There is no end cell wall, cytoplasm or organelles to allow an unbroken column of water up the plant
Phloem Cell
Cells that transport sugar and minerals both up and down the plant
Phloem Cell
Have very little cytoplasm
Have pores in their cell walls to allow the free transport of material along the stem
