Cell Respiration

Question 1

What is respiration ?

Answer 1

Breathing in & out

Question 2

What does respiration do ?

Answer 2

Supplies oxygen to the body’s cells & take away poisonous by-product (carbon dioxide)

Question 3

What is Cell Respiration ?

Answer 3

Different body cells have different respirations & it is called Cell Respiration

Question 4

What is movement caused by & what does it need ?

Answer 4

Muscle Contracting which needs Energy

Question 5

What does your muscles obtain energy from ?

Answer 5

Food

Question 6

What makes up food ?

Answer 6

Carbohydrates
Proteins
Fats
Vitamins
Minerals
Fibre

Question 7

What is the break down of food called ?

Answer 7

Digestion

Question 8

What does your body use for Energy ?

Answer 8

Carbohydrates & Fats

Question 9

How is Carbohydrates digested & where is it stored ?

Answer 9

1. Starch is a string of glucose molecules joined together
2. Enzymes in the gut break down the starch into glucose
3. The glucose passes to your blood stream through the walls of the gut

It is stored :

Liver as ‘glycogen’ - released when the level of glucose in the blood becomes low

Muscles as ‘glycogen’ - changed back to glucose during execise

The rest of glucose is carried in the blood to other cells

Question 10

What is the difference between Aerobic & Anaerobic Respiration ?

Answer 10

Aerobic Respiration is the production of energy using oxygen.

Anaerobic Respiration is the production of energy WITHOUT using oxygen .

Question 11

How does Aerobic Respiration work ?

Answer 11

glucose + oxygen –> carbon dioxide + water + energy

Glucose from carbohydrates
+ Oxygen from respiration are needed
——->
When you breath out Carbon Dioxide is produced
+ You sweat therefore producing Water
+ You use up Energy

Question 12

What is Aerobic Respiration used for ?

Answer 12

Produces heat therefore warming the body

Used for muscle contraction providing movement

Question 13

What are the advantages of Aerobic Respiration ?

Answer 13

A lot of glucose is stored so it can supply energy for long periods of time

There is no dangerous by-products

Question 14

What are the disadvantages of Aerobic Respiration ?

Answer 14

Take 90 seconds for the Aerobic system to fully work

Activities require maximum effort

We cannot use this system because it takes up time for the oxygen to reach the muscles when we need it in a short space of time

Question 15

What is Anaerobic Respiration used for ?

Answer 15

Oxygen cannot reach the muscles fast enough during maximum effort therefore we use Anaerobic Respiration

Question 16

How does Anaerobic Respiration work ?

Answer 16

glucose —> energy + lactic acid

The same amount of glucose produces less energy but at a faster rate

Question 17

What is a advantage of Aerobic Respiration ?

Answer 17

Can be used immediately & for powerful contractions

Question 18

What is a disadvantage of Aerobic Respiration ?

Answer 18

Around 60-90 seconds lactic acids make muscles tired & painful. Creating Oxygen debt

Question 19

What is Oxygen Debt ?

Answer 19

The amount of oxygen needed to get the body back to its resting state

Question 20

What happens to Lactic Acid ?

Answer 20

Turned into Carbon Dioxide & Water & a little is turned back into Glucose after enough oxygen is available .

Question 22

How is Oxygen Dept created ?

Answer 22

By taking part in maximum-effort activities

While waiting for your heart rate & breathing to increase

In sports that require a sudden burst of speed & maximum effort