B2.6 Aerobic and Anaerobic Repiration

Question 1

Where does respiration take place ?

Answer 1

Happens in the mitochondria

Question 2

What can the energy released during respiration be used for in plants and animals ?

Answer 2

• to build up larger molecules from smaller ones
• in animals to allow the muscles to contract
• in mammals and birds the energy is used to keep their body temperature steady
• in plants to build sugars nitrates and other nutrients into amino acids which are then built up into proteins

Question 3

What changes can occur during exercise and why ?

Answer 3

• breathing increases need extra oxygen
• heart rate increases because you need more oxygenated blood to your muscles
• Increased blood flow benefits your brain allowing it to function better

Question 4

What can glucose be stored in animal cells ?

Answer 4

Glycogen

Starch

Question 5

What is the equation for anaerobic respiration ?

Answer 5

Glucose+oxygen- carbon dioxide+water+energy

Question 6

What is anaerobic respiration and where does it occur ?

Answer 6

Where there’s not enough oxygen

Occurs in plants and cells and yeast

Question 7

Why do heart rate and breathing rate remain high after vigorous exercise ?

Answer 7

Because muscle cells respire more