Unit 12 Flashcards
respiration
State the uses of energy in living organisms
muscle contraction, protein synthesis,
cell division, active transport, growth, the
passage of nerve impulses and the maintenance of a constant body temperature
Investigate and describe the effect of
temperature on respiration in yeast
low temp: less collisions
optimal temp: optimal respiration
high temp: denature
Describe aerobic respiration
the chemical reactions in cells that use oxygen to break down nutrient molecules to release energy
State the word equation for aerobic respiration
glucose + oxygen → carbon dioxide + water
State the balanced chemical equation for aerobic respiration
C6H12O6 + 6O2 → 6CO2 + 6H2O
Describe anaerobic respiration
the chemical
reactions in cells that break down nutrient
molecules to release energy without using
oxygen
anaerobic respiration releases much
____ energy per glucose molecule than aerobic respiration
less
State the word equation for anaerobic respiration in yeast
glucose → alcohol + carbon dioxide
State the word equation for anaerobic respiration
in muscles during vigorous exercise
glucose → lactic acid
State the balanced chemical equation for
anaerobic respiration in yeast
C6H12O6 → 2C2H5OH + 2CO2
State that lactic acid builds up in muscles and
blood during vigorous exercise causing an oxygen
debt
State that lactic acid builds up in muscles and
blood during vigorous exercise causing an oxygen
debt
Outline how the oxygen debt is removed after
exercise, limited to:
(a) continuation of fast heart rate to transport
lactic acid in the blood from the muscles to
the liver
(b) continuation of deeper and faster breathing
to supply oxygen for aerobic respiration of
lactic acid
(c) aerobic respiration of lactic acid in the liver
explaannnation
