Fluid movement

Question 0

Why is the movement of substances in and out of cells around the body essential to the life of the organism?

Answer 0

The movement of substances in and out of cells around the body is essential to the life of an organism because food matter/oxygen must be able to pass into the cell and waste/harmful materials must be able to move out.

Question 1

What is diffusion?

Answer 1

Diffusion is the movement of molecules of a substance from an area where they are in high concentration to one where their concentration is lower.until there is an even distribution of the molecules.

Question 2

Is diffusion an active or a passive process?

Answer 2

Diffusion is a passive process so particles travel from one place to another without anything moving them.

Question 3

How is diffusion affected by cell type?

Answer 3

Diffusion can take place in Unicellular/smaller cells .

Diffusion is too slow a process in multicellular larger cells as they are too big.The process is too slow and cannot efficiently fill them with all the materials that they need quickly enough.
The tissues in multi cellular organisms need to have raw materials transported to them.

Question 4

Which organ system transports materials to all cells in the human body?

Answer 4

The cardio vascular organ system transports materials to all the cells within the human body .