respiration

Question 1

what is respiration

Answer 1

Respiration is a chemical process that involves the breakdown of nutrient molecules (specifically glucose) in order to release the energy stored within the bonds of these molecules

Question 2

what are the 2 types of respiration

Answer 2

aerobic and anaerobic

Question 3

what are the differences between the 2 types of respiration

Answer 3

aerobic respiration is respiration with the use of oxygen

anaerobic respiration is respiration without the use of oxygen

Question 4

what is the difference in the energy each of the respiration produce

Answer 4

aerobic respiration produces more energy

anaerobic respiration produces less energy

Question 5

where does aerobic respiration take place in the cell

Answer 5

Most of the chemical reactions in aerobic respiration take place in the mitochondria

Question 6

what are the uses of energy in the body

Answer 6

Contract muscle
Synthesise proteins
Cell division (to make new cells)
Grow
Enable active transport to take place
Allow nerve impulses to be generated
Maintain a constant internal body temperature

Question 7

how is respiration controlled

Answer 7

Respiration is a series of reactions that are controlled by enzymes

Question 8

what does aerobic respiration produce other than energy

Answer 8

produces carbon dioxide and water

Question 9

what is the formula for aerobic respiration

Answer 9

c6h12o6(glucose) + 6o2 —-> 6co2 + 6h2o

Question 10

what is the effect of temperature on respiration

Answer 10

as respiration is an enzyme controlled reaction, it is unlikely to work faster beyond around 40℃ as the enzymes will denature

Question 11

what does anaerobic respiration produce in the muscle cells

Answer 11

lactic acid

Question 12

what is repaying the oxygen debt

Answer 12

lactic acid build-up lowers the pH of the cells
this could denature the cells so it needs to be removed
Cells excrete lactic acid into the blood. When blood passes through the liver, lactic acid is taken up into liver cells where it is oxidized, producing carbon dioxide and water
due to this we continue to breathe heavily during vigorous exercise

Question 13

anaerobic respiration in yeast

Answer 13

c6h12o6 —> 2c2h5oh + 2co2

glucose —–> alcohol + carbon dioxide

Question 14

is the breakdown of glucose in anaerobic respiration complete

Answer 14

no

Question 15

what is the word equation for aerobic respiration in plants

Answer 15

glucose + oxygen —> carbon dioxide + water

Question 16

what is produced by yeast during anaerobic respiration

Answer 16

alcohol+ carbon dioxide

Question 17

what occurs in a respirometer with a living creature (plant, locust)

Answer 17

indicator moves to the left

Question 18

what occurs in a respirometer with soda lime present

Answer 18

indicator moves to the left

Question 19

what is repaying the oxygen debt in simple terms

Answer 19

Taking in the amount of oxygen required to remove the lactate, and replace the body’s reserves of oxygen.

Question 20

what is the word eq for anaerobic resp in human muscle

Answer 20

glucose —-> lactic acid

Question 21

where does anaerobic respiration take place in human cells

Answer 21

cell cytoplasm