B9.4 Metabolism and the liver

Question 1

What is the definition of metabolism?

Answer 1

Is the sum of all the reactions that take place in a cell or in the body

Question 2

What are some common examples of metabolic reactions?

Answer 2

Reactions of respiration

Reactions of photsynthesis

Question 3

What are some functions of the liver?

Answer 3

Detoxifying poisonous substances such as ethanol from alcoholic drinks
Passing the breakdown products into the blood so they can be execreted
Breaking down old - worn-out blood cells and storing the iron until is needed

Question 4

How does lactic acid get removed?

Answer 4

In the liver due to the blood flowing through the muscles transports the lactic acid to the liver where it is converted into glucose

Question 5

When is the oxygen debt repaid?

Answer 5

Once the lactic acid has been converted back to glucose and the glucose has been completely broken down in aerobic respiration to form CO2 + water