Module 2.4- Processes & Explanations Flashcards
(3 cards)
1
Q
Why do only large organisms need transport systems?
A
To move substances quickly from exchange surfaces to required parts, to keep the surface area to volume ratio low enough so that a body needs less substances
2
Q
What are the components of blood?
A
Blood contains platelets, red blood cells, white blood cells, and plasma, in which substances such as nutrients, carbon dioxide and hormones are carried around the body
3
Q
How does the heart look like?
A
