III. Eliminating Wastes

Question 1

A. undigested materials

Answer 1

held in rectum until eliminated through anus

• and removed from body

Question 2

B. metabolized materials

Answer 2

1. carbohydrate metabolism
2. protein metabolism

Question 3

B. metabolized materials
1. carbohydrate metabolism

Answer 3

carbon dioxide and water are released from blood into the lungs into air

• to glucose then mitochondria

Question 4

B. metabolized materials
2. protein metabolism

Answer 4

• ammonia is byproduct of protein
  breakdown
  ^ protein is made of amino acids
• ammonia is very toxic
  ^ we have to get rid of it
• ammonia is sent to liver
• the solution to pollution is dilution and diffusion
• bacteria kills ammonia to make proteins

a) making urea
- liver converts ammonia to urea
b) extracting urea from blood
i. kidneys
- kidneys filter wastes from blood
- ureters transport it to bladder
through the ureters
ii. bladder
- urea and other waste stores as
urine in the bladder and eliminated
through the urethra
^ when urea is full, then you need to
use the bathroom