Biology questions

F Biology.

Part 2.

Circulatory system questions.

Why do we need a transport system?

Answer:. Because of our Surface: Area to Volume ratio.

2.) What percentage of the blood is solid and liquid?...

Answer:. 55% plasma, which is a liquid. 45% Cells which are solid.

Question 3.) What 5 substances are carried in the Plasma?...

Answer: Hormones. Water. Carbon Dioxide. Glucose. And Urea.

Question 4.) Why are Red Blood Cells well adapted to carrying Oxygen?...

Answer: Because they contain Haemoglobin. Because they are the shape of Bi-concave discs.

They have no nucleus. They are very small.

Question 5.) What…