B4 - Using Food and Controlling Growth Flashcards
What is respiration?
What is respiration?
A process that releases energy in the
form of ATP from the breakdown of
glucose
What is ATP?
What is ATP?
It is a short term energy store in all cells
and is described as the universal energy
carrier.
Why does respiration occur continuously
in living cells?
Why does respiration occur continuously in living
cells?
ATP is required for many essential processes in living cells e.g. movement, homeostasis and active transport.
What type of reaction is respiration?
What type of reaction is respiration?
It is an exothermic reaction that releases
energy in the form of heat.
Where do plants get the glucose
required for respiration?
Where do plants get the glucose required for
respiration?
They produce their own glucose during photosynthesis.
Where do animals get the glucose
required for respiration?
Where do animals get the glucose required for
respiration?
From the breakdown of carbohydrates that they have ingested
What is aerobic respiration?
What is aerobic respiration?
Respiration in the presence of oxygen that forms ATP from the breakdown of glucose
Write the word equation for aerobic
respiration
Write the word equation for aerobic respiration
glucose + oxygen → carbon dioxide + water (+ATP)
Write the symbol equation for aerobic
respiration
Write the symbol equation for aerobic respiration
C6H12O6+ 6O2 → 6CO2 + 6H2O (+ATP)
What does aerobic respiration require?
What does aerobic respiration require?
Glucose, C6H12O6
Or another respiratory substance e.g. lipids, proteins
Oxygen gas, O2
What does aerobic respiration produce?
What does aerobic respiration produce?
Carbon dioxide gas, CO2
Water, H2O
ATP
Where does aerobic respiration take
place in eukaryotic cells?
Where does aerobic respiration take place in
eukaryotic cells?
In the cytoplasm and mitochondria
Where does aerobic respiration take
place in prokaryotic cells?
Where does aerobic respiration take place in
prokaryotic cells?
In the cytoplasm
What is anaerobic respiration?
What is anaerobic respiration?
Respiration that takes place without oxygen and forms ATP from the breakdown of glucose
When may anaerobic respiration take
place in human cells?
When may anaerobic respiration take place in
human cells?
During vigorous exercise
When may anaerobic respiration take
place in plant cells?
When may anaerobic respiration take place in plant
cells?
If the soil becomes waterlogged
When may anaerobic respiration take
place in bacteria?
When may anaerobic respiration take place in
bacteria?
When bacteria enter puncture wounds (little oxygen available)
Where does anaerobic respiration take
place?
Where does anaerobic respiration take place?
It takes place in the cytoplasm of eukaryotic and prokaryotic cells.
What does anaerobic respiration
require?
What does anaerobic respiration require?
Glucose, C6H12O6
Or another respiratory substance e.g. lipids, proteins
Write the word equation for anaerobic
respiration in muscle cells
Write the word equation for anaerobic respiration in
muscle cells
glucose → lactic acid (+ ATP)
Why may anaerobic respiration in
muscle cells eventually stop?
Why may anaerobic respiration in muscle cells
eventually stop?
Lactic acid build-up inhibits anaerobic
respiration
What are the symptoms of lactic acid
build-up?
What are the symptoms of lactic acid build-up?
Cramp and fatigue
Write the word equation for anaerobic
respiration in yeast cells
Write the word equation for anaerobic respiration in
yeast cells
glucose → ethanol + carbon dioxide (+ATP)
What is the problem associated with
ethanol build-up in yeast cells?
What is the problem associated with ethanol build-up
in yeast cells?
Ethanol is toxic to yeast cells