Respiration

Question 1

Fill in the gaps, respiration occurs in every _______ cell. In eukaryotic cells it occurs in the ______

Answer 1

living, mitochondria

Question 2

what are the two types of respiration

Answer 2

Aerobic and anaerobic

Question 3

What is respiration

Answer 3

A chemical process that takes energy from glucose by breaking it down to release ATP

Question 4

why is energy important? (Mention for humans, plants and other organisms)

Answer 4

for humans ,to keep warm and muscle contraction.
for plants, active transport and the movement of food substances.
for other organisms, movement.

Question 5

What is the word equation for aerobic respiration

Answer 5

oxygen + glucose —> carbon dioxide + water (+ energy)

Question 6

What is the symbol equation for aerobic respiration

Answer 6

6O2+C6H12O6—> 6CO2+6H2O (+ energy)

Question 7

Where did the substrates for aerobic respiration come from?

Answer 7

glucose comes from a digestion of food

oxygen comes from gas exchange in the lungs transported through the blood

Question 8

Why did the products of aerobic respiration go?

Answer 8

carbon dioxide is released through our lungs through gas exchange
water is used or excreted in sweat urine or breath
energy is used within the same cell

Question 9

what does hydrogen carbonate indicator solution turn in a neutral pH ,acidic pH and alkaline pH.

Answer 9

red in a neutral pH
yellow and acidic pH
purple in an alkaline pH

Question 10

What is CO2, neutral, acidic or alkaline?

Answer 10

Acidic

Question 11

What is anaerobic respiration

Answer 11

Respiration without the presence of oxygen

Question 12

Why do we anaerobically respire and what are the advantages?

Answer 12

we anaerobically respire when muscles are not receiving enough oxygen, this is an advantage as it allows muscles to work for longer without oxygen.

Question 13

What are the downsides to anaerobic respiration? (Name three)

Answer 13

anaerobic respiration does not release as much energy as aerobic respiration
anaerobic respiration builds up a lactic acid in muscles which causes pain and muscle fatigue
when muscles respire anaerobically they build up an oxygen debt so when you stop exercising your body needs to repay the debt to all the muscles needed


Question 14

What is the word equation for anaerobic respiration

Answer 14

glucose —->lactic acid (+ energy)

Question 15

what is the word equation for anaerobic respiration in plants and fungi?

Answer 15

glucose—-> carbon dioxide+ ethanol (+ Energy)

Question 16

What can we use the products of anaerobic respiration in plants and fungi for?

Answer 16

carbon dioxide is used in breadmaking as the pockets of carbon dioxide get trapped and causes of bread to rise
ethanol is using beer and wine making use releases alcohol which eventually kills the yeast