Specialised cells, tissues, organs and systems

T2 Biology YR8 checkpoint revision

what are cells specialised through

they are specialised through size, shape, organelles they contain

Why are there differences in the structure (e.g.)

It relates to the job they perform e.g. storage, transport, movement, indentification, communitcation

Describe the proccess from cells to organisms

specialised cell to tissue to organ to organ system to multicelluar organisms

State the four types of tissue

Connective

muscle

Nervous

epithelial

what does a connective tissue do

it connects and supports other cells

What does a muscle tissue do

it causes parts of the body to move e.g. the heart to beat

What does a nervous tissue do

it allows body parts to send messages

what does an epithelial tissue do

it helps protect internal parts of the body from damage, bacteria, waterloss etc.

What jobs to red blood cells do and does their structure relate to the job

They carry oxygen to the cells and are small enough to squeeze through blood vessels, is indented on both sides and increase surface area for oxygen and has no nucleus which frees up room for oxygen.