Respiration

Question 1

Where does energy come from?

Answer 1

The digestion in foods. It come from the glucose in the carbohydrates.

Question 2

Where does glucose come from?

Answer 2

Digested carbohydrates.

Question 3

What comes out of the digested carbohydrates?

Answer 3

Stored chemical energy

Question 4

When glucose reacts with oxygen what is released?

Answer 4

Energy. And carbon dioxide and water

Question 5

What happens in the body’s cells?

Answer 5

Glucose and oxygen react to release energy. Some of this is released as heat and the rest is used in the cells.

Question 6

What is the release of energy from glucose called?

Answer 6

Respiration 🫁

Question 7

What is the equation for aerobic respiration?

Answer 7

Glucose + Oxygen -> carbon dioxide + water + energy.

Question 8

Photosynthesis equation

Answer 8

6CO(small)2 + 6H(small)2O -> C(small)6H(small)12O(small)6 + 6O(small)2

Question 9

Why is glucose + oxygen —> carbon dioxide + water + energy the equation for aerobic respiration?

Answer 9

Because energy is released with oxygen.

Question 10

What are transport systems?

Answer 10

They take materials to and from respiring cells

Question 11

What is energy needed for.

Answer 11

Is needed to do anything

Question 12

When is water made?

Answer 12

Is made when energy is released from food

Question 13

What is carbon dioxide in anaerobic respiration?

Answer 13

A poisonous by product of respiration

Question 14

Where does respiration take place?

Answer 14

The organelle of Mitochondria

Question 15

Where does the oxygen come from?

Answer 15

Breathed in

Question 16

What do red blood cells contain?

Answer 16

Haemoglobin Hb

Question 17

Where does the oxygen go?

Answer 17

Diffuses into the blood

Question 18

Where does the oxygen in the blood go?

Answer 18

It binds with Hb in the red blood cells

Question 19

Where do the oxygen in the red blood cells go (after binding with Hb)

Answer 19

They are transported around the body and then diffuses right back out again into body cells that need to respire e.g muscle.

Question 20

What does the glucose do?

Answer 20

It diffuses into the blood plasma from the intestines

Question 21

What type of respiration is anaerobic?

Answer 21

Not needing oxygen

Question 22

What is the anaerobic respiration equation?

Answer 22

Glucose -> Lactic Acid + (small amount) of energy

Question 23

What is oxygen debt?

Answer 23

The amount of oxygen needed to remove the lactic acid (it is toxic). E.g when runners are panting after a long run to get more oxygen to get rid of the pain.

Question 24

equation for oxygen debt

Answer 24

Lactic Acid + Oxygen -> Water + Carbon Dioxide

Question 25

What experiment did we do to see the anaerobic respiration effects.

Answer 25

Take a peg and place it between your thumb and index finger. Press it continuously until you can’t anymore. Get a partner to count how many times you press the peg every 30s.

Question 26

The graph for finger marathon experiment.

Answer 26

y axis = number of presses X axis = Time

Question 27

What is the equation for anaerobic respiration in plant and yeast cells?

Answer 27

Glucose -> ethanol + carbon dioxide + energy ( small amount )

Question 28

What is anaerobic respiration in yeast cells called?

Answer 28

Fermentation

Question 29

When does yeast undergo fermentation?

Answer 29

When bread or bear is made.

Question 30

What is the alcohol

Answer 30

Ethanol

Question 31

Where does the alcohol go?

Answer 31

Evaporated when the bread is baked

Question 32

Where dose the carbon dioxide go?

Answer 32

Trapped in the bread and makes it rise and give beer the bubbles