Respiration Flashcards
Where does energy come from?
The digestion in foods. It come from the glucose in the carbohydrates.
Where does glucose come from?
Digested carbohydrates.
What comes out of the digested carbohydrates?
Stored chemical energy
When glucose reacts with oxygen what is released?
Energy. And carbon dioxide and water
What happens in the body’s cells?
Glucose and oxygen react to release energy. Some of this is released as heat and the rest is used in the cells.
What is the release of energy from glucose called?
Respiration 🫁
What is the equation for aerobic respiration?
Glucose + Oxygen -> carbon dioxide + water + energy.
Photosynthesis equation
6CO(small)2 + 6H(small)2O -> C(small)6H(small)12O(small)6 + 6O(small)2
Why is glucose + oxygen —> carbon dioxide + water + energy the equation for aerobic respiration?
Because energy is released with oxygen.
What are transport systems?
They take materials to and from respiring cells
What is energy needed for.
Is needed to do anything
When is water made?
Is made when energy is released from food
What is carbon dioxide in anaerobic respiration?
A poisonous by product of respiration
Where does respiration take place?
The organelle of Mitochondria
Where does the oxygen come from?
Breathed in
What do red blood cells contain?
Haemoglobin Hb
Where does the oxygen go?
Diffuses into the blood
Where does the oxygen in the blood go?
It binds with Hb in the red blood cells
Where do the oxygen in the red blood cells go (after binding with Hb)
They are transported around the body and then diffuses right back out again into body cells that need to respire e.g muscle.
What does the glucose do?
It diffuses into the blood plasma from the intestines
What type of respiration is anaerobic?
Not needing oxygen
What is the anaerobic respiration equation?
Glucose -> Lactic Acid + (small amount) of energy
What is oxygen debt?
The amount of oxygen needed to remove the lactic acid (it is toxic). E.g when runners are panting after a long run to get more oxygen to get rid of the pain.
equation for oxygen debt
Lactic Acid + Oxygen -> Water + Carbon Dioxide
What experiment did we do to see the anaerobic respiration effects.
Take a peg and place it between your thumb and index finger. Press it continuously until you can’t anymore. Get a partner to count how many times you press the peg every 30s.
The graph for finger marathon experiment.
y axis = number of presses
X axis = Time
What is the equation for anaerobic respiration in plant and yeast cells?
Glucose -> ethanol + carbon dioxide + energy ( small amount )
What is anaerobic respiration in yeast cells called?
Fermentation
When does yeast undergo fermentation?
When bread or bear is made.
What is the alcohol
Ethanol
Where does the alcohol go?
Evaporated when the bread is baked
Where dose the carbon dioxide go?
Trapped in the bread and makes it rise and give beer the bubbles
