respiration bio test

Question 1

word equation for aerobic respiration

Answer 1

glucose + oxygen –> carbon dioxide + water

Question 2

symbol equation for aerobic respiration

Answer 2

C6H12O6 + 6O2 → 6CO2 + 6H2O

Question 3

equation for anaerobic respiration in animals

Answer 3

glucose –> lactic acid (+ energy released)

Question 4

equation for anaerobic respiration in organisms such as yeast

Answer 4

glucose –> ethanol + carbon dioxide (+energy released)

Question 5

when would an athlete have to respire anaerobically

Answer 5

when they were doing high intensity exercise, eg: sprinting

Question 6

What is the downside of sprinting?

Answer 6

due to anaerobic respiration there is a build of lactic acid in the muscles , which lead to muscle fatigue and muscle aching

Question 7

where does anaerobic respiration occur?

Answer 7

in the cytoplasm of cells

Question 8

where does aerobic respiration occur?

Answer 8

in the mitochondria

Question 9

what do we use the products of anaerobic respiration in yeast for?

Answer 9

ethanol is used to make alcoholic drinks and the carbon dioxide is used to make bread rise

Question 10

other food products that use of anaerobic respiration other than yeast

Answer 10

yoghurt, vinegar, cheese

Question 11

what two main organelles are in plant cells but not in animal cells?

Answer 11

chloroplasts - (for photosynthesis) and cell wall which holds the cell in place and keeps its shape

Question 12

how to tell if you are breathing aerobically (C02)

Answer 12

breathe into limewater and if it turns cloudy you are respiring aerobically

Question 13

how to test you are breathing aerobically (water)

Answer 13

check for condension, breathe against a cold surface such as a mirror

Question 14

what happens if the alcohol level rises too high in anaerobic respiration with yeast?

Answer 14

it becomes too toxic and kills the yeast

Question 15

anaerobic respiration in plants equation:

Answer 15

glucose –> ethanol + carbon dioxide (+energy)

Question 16

where does anaerobic respiration in plants occur??

Answer 16

in the roots (in the waterlogged soil)

Question 17

liquid paraffin, yeast cell experiment, what is the indicator solution in tube b?

Answer 17

limewater ( since it tests for carbon dioxide being present)

Question 18

liquid paraffin, yeast cell experiment, what colour would the limewater be before and after the gas is bubbled through it?

Answer 18

colourless and then changes to cloudy in the presence of C02

Question 19

liquid paraffin, yeast cell experiment, what is the purpose of the liquid paraffin in tube A

Answer 19

it prevents 02 from reaching the yeast - creating an anaerobic condition

Question 20

after vigorous exercise lactic acid is transported to the ? from the ?

Answer 20

liver, muscles

Question 21

what happens once lactic acid has been transported to the liver?

Answer 21

lactic acid is oxidised to carbon dioxide and water

Question 22

what does anaerobic mean and what is it

Answer 22

it means respiring without oxygen and is the incomplete breakdown of glucose (without oxygen)

Question 23

what does repaying the oxygen debt mean??

Answer 23

it means providing the skeletal muscles with enough oxygen to break down all the lactic acid

Question 24

what sort of a molecule is glycogen

Answer 24

it’s a polymer molecule

Question 25

what is a polymer molecule

Answer 25

a storage molecule

Question 26

where is glycogen found

Answer 26

liver and skeletal muscles

Question 27

which hormone promotes glycogen formation

Answer 27

insulin

Question 28

when is glycogen used

Answer 28

blood glucose levels are low - when fasting or exercising

Question 29

how is glycogen used

Answer 29

broken down into glucose which is then used in respiration

Question 30

what is aerobic respiration

Answer 30

the complete breakdown of glucose and oxyge

Question 31

which one - aerobic or anaerobic produces more energy

Answer 31

aerobic since its the complete breakdown

Question 32

How to answer 6 marker - how does your fitness level affect the changes in breathing rate when exercising

Answer 32

answer for during and after exercising and for either unfit or fit person not both

Question 33

how does your fitness level affect the changes in breathing rate when exercising : a fitter person's heart beats more ? so it has a higher ? volume - more ? per beat so more oxygenated ? and glucose gets to the muscles more ?. Because of this breathing ? can stay lower so can supply same ? of 02 for ? respiration. when exercise stops, person's breathing rate ? to normal more ?. as there is less oxygen ? to be repaid since they had less ? respiration and due to being fitter have a ? heart rate in general

Answer 33

efficiently, stroke, blood, blood, quickly, rate, amount, aerobic, returns, quickly, debt, anaerobic , lower

Question 34

in exercise why does the heart rate increase/ get a lot faster

Answer 34

because the heart is having to pump more blood around the body and lungs to gain more oxygen for aerobic respiration, meaning more contractions and more glucose to lungs

Question 35

why does breathing rate increase during exercise

Answer 35

because more oxygen is needed for aerobic respiration - also means more oxygen in blood and more carbon dioxide being removed

Question 36

why does breath volume increase during exercise

Answer 36

to bring more air into lungs, meaning more oxygen in blood

Question 37

why does level of glucose increase during exercise

Answer 37

for more aerobic respiration

Question 38

why does level of glucose increase during exercise

Answer 38

increases supply of respiratory substrate

Question 39

what is respiratory substrate

Answer 39

the organic nutrients oxidized at the time of respiration

Question 40

metabolism is the sum of all of the ? reactions that happen in a living ?. these reactions include ? of food, aerobic and anaerobic ?, and protein ?. in plants ? is also a part of respiration!

Answer 40

chemical, organism, digestion, respiration , synthesis, photosynthesis

Question 41

most of these metabolic ? are controlled by ?

Answer 41

reactions, enzymes

Question 42

what does an anabolic reaction do

Answer 42

builds things

Question 43

what does a catabolic reaction do

Answer 43

breaks things down

Question 44

sugars, amino acids, fatty acids and ? are important in the synthesis and ? of carbohydrates, ? and lipids

Answer 44

glycerol, breakdown, proteins

Question 45

what 3 things are glucose converted to in metabolism??

Answer 45

starch, glycogen and cellulose

Question 46

what two substances synthesise proteins and are also used to form amino acids

Answer 46

glucose and nitrate ions

Question 47

metabolism also ? ? excess proteins to ? urea for excretion

Answer 47

breaks down, form

Question 48

what are the correct products of the digestion of a lipid molecule ( ratio) ?

Answer 48

3 fatty acids to 1 glycerol molecule

Question 49

the production of an organic compound in a living thing, especially as aided by enzymes - what is this the definition of..?

Answer 49

synthesis/ synthesising

Question 50

what 3 ways is energy from respiration used by an organism

Answer 50

synthesis reactions, active transport and also to maintain body temperature - ( NOT DIFFUSION!!)