B1: Muscle Cells


Muscle Cells


Muscle cells have protein fibres that contract, making the cell shorter which allows the muscle to move.

 

 

 

Cilia

Hair like structures are there to move or push substances along.

The cells along the  or windpipe have cilia, which look like hairs, to move trapped dust and particles up and out of the trachea.

 

Red Blood Cells

Red blood cells have a biconcave shape, like a barbell, which gives them a larger surface area to carry oxygen on.

 

 

 

Transport Vessels

Transport vessels and tissues usually have large empty spaces to allow substances to move without interruption. vessels in plants have no cytoplasm and no end plates, to allow water to flow from the roots of the plant up to the shoots and leaves in a process called

The cells that make up the xylem are dead because they are waterproof.

Arteries in animals have no valves, as blood flows fast enough to prevent back flow.


in plants carry sugars produced in the leaves around the plant in a process called

The cells that make up the phloem are joined together by small holes in the cell membrane and the cell wall that allow transport.