Exercize and Metabolism

Question 1

The more you exercize, what happens?

Answer 1

-Heart rate increases
-Breathing rate increases
-Breath rate increases

Question 2

One exercise stops, and aerobic respiration returns, what happens?

Answer 2

The Lactic Acid (from anaerobic respiration) is transported in the bloodstream to the liver where it’s oxidised to form CO2 and H2O or converted back into glucose and stored as glycogen

Question 3

What is Oxygen debt?

Answer 3

Oxygen debt (or EPOC (excess post-exercise oxygen consumption)) is the amount of oxygen needed to oxidise the lactic acid

Question 4

How can we measure breath volume?

Answer 4

Using a Spirometer

Question 5

What is metabolism?

Answer 5

All the chemical reactions happening in a living organism

Question 6

What do metabolic reactions include?

Answer 6

The breakdown of molecules by enzymes

Question 7

What are examples of reactions involved in metabolism?

Answer 7

-Conservation of glucose to starch, glycogen to cellulose
-formation of lipids
-formation of amino-acids
-formation of proteins
-respiration
-breakdown of excess proteins to form urea for excretion

Question 8

How are lipids formed?

Answer 8

Build up of lipid molecules from a glycerol and 3 fatty acids (is a metabolic reaction)

Question 9

How are amino-acids (proteins) formed?

Answer 9

When glucose is combined with nitrate ions. A chain of amino-acids form a protein

Question 10

How does urea breakdown?

Answer 10

Excess amino-acids are broken down to form urea, the process occurs in the liver. The urea then is transported to the kidneys via the blood and excreted from the body

Question 11

What are 3 metabolic processes in plants?

Answer 11

-Respiration
-Photosynthesis
-Nitrogen fixation