respiration and exercise

Question 1

true or false

respiration is breathing in and out

Answer 1

false

its not at all

Question 2

what is respiration ?

Answer 2

• its the process of releasing energy from glucose which goes to every cell

Question 3

where and whats dose respiration take place ?

Answer 3

• happens every cell everywhere
• all living thing ,plant , human etc
• happens in the mitrchdria

Question 4

what is aerobic respiration ?

Answer 4

• is respiration using oxygen .

- most efficient way to release energy from glucose

Question 5

what is the word equation for aerobic respiration ?

Answer 5

glucose + oxygen —–> carbon dioxide + water + energy+

Question 6

what can energy used form aerobic respiration be used for ?

Answer 6

• to build up larger molecules from smaller one like proteins from amino acids
• in mammals and birds to keep the dot temperature steady
• in animals to allow muscle contraction
• in plants to build up sugars , nitrates and other nutrients into amino acids which are then built up into protein

Question 7

why does physical activity increase …….

Answer 7

• breathing rate makes you breathe more deeply to meet the demand for extra oxygen
• speed at which the heart pumps blood

Question 8

true or false ?

glycogen is not used during exercise

Answer 8

this false its used

Question 9

where is glycogen stored ?

Answer 9

• ## mainly scored in the liver but each muscle has its own store

Question 10

during lots of exercise muscles use glucose….

Answer 10

• rapidly , so some of the stored glycogen is connected bak to glucose to provide ,more energy

Question 11

when does anaerobic respiration start ?

Answer 11

• when lots of excise starts to happen and your body can’t supply enough oxygen to your muscles they start ana respiration

Question 12

what does anaerobic mean ?

Answer 12

• without oxygen

- its the incomplete breakdown of glucose which produces lattice acid

Question 13

formula for anaerobic respiration

Answer 13

• glucose —> energy + lactic acid

Question 14

what area the down sides anaerobic respiration

Answer 14

• lot less energy is given out because only partially breaks down glucose
• lactic acid which is produced , painful and creates oxygen debt

Question 15

what is muscle fatigue

Answer 15

• muscles get tired and contract less , efficiently less

Question 16

what is oxygen debt

Answer 16

• is the amount of oxygen needed to oxide the latic acid that has built up during anaerobic respiration
• get breath back afterwards

Question 17

heart rate goes up why ?

Answer 17

• more oxygen to muscles
• aerobic respiration
• releases energy for muscle contraction

Question 18

prolonged excise – muscle fatigue

Answer 18

• lactic acid builds up
• lack of oxygen
• anaerobic respiration —> release energy
• muscle contraction

Question 19

effect of lactic acid builds

Answer 19

• muscle stiffness
• pain
• ache
• cramps

Question 20

effect of exercise on skin

Answer 20

• sweat more –> cools down

- skin colour turns red and blotchy –> as no oxygen

Question 21

effect of exercise on heart

Answer 21

• heart rate increase
• increase blood flow to muscles
• co2 is removed quicker
• becomes larger with more exercise
• more effective later on

Question 22

effect on exercise on muscles

Answer 22

• more o brought into muscles
• produces more co2 as of more contractions
• contractions are hard and faster
• more glucose is needed
• co2 needs to be removed after exercise - glucose broken into glycogen

Question 23

effect of exercise on lungs

Answer 23

• rate of breathing increases
• each breath more deep
• more oxygen in the body picked up by red blood cells
• breathe more often
• oxygen carried to exercising muscles
• more co2 removed
• lungs become bigger with exercise