B4- Bioenergentics Flashcards
What is the word equation for photosynthesis?
Carbon dioxide + Water –> glucose + Oxygen
What is the symbol equation for photosynthesis?
6CO2+ 6H2O –>  C6H12O6 + 6O2
Where does photosynthesis take place and what is the name of the green pigment which absorbs sunlight?
Photosynthesis takes place in chloroplast.
The green pigment is called chlorophyll.
List three factors that can affect the rate of photosynthesis.
Light,
Concentration of CO2,
Temperature
Why can plants not carry out photosynthesis at high temperatures?
The enzymes needed for photosynthesis become denatured.
Between which hours does respiration and photosynthesis take place in this plant cells?
Respiration occurs 24 hours a day (in all cells).
Photosynthesis only occurs in the presence of sunlight.
State two ways that plants use the glucose produced during photosynthesis
Respiration,
Making Cellulose.
What is aerobic respiration and which organelle does respiration take place in?
Aerobic respiration uses oxygen, Respiration occurs in the mitochondria.
What is the word equation for aerobic respiration?
Glucose + Oxygen –> Carbon Dioxide + Water
When does aerobic respiration take place in animals and what is the word equation?
When oxygen is unavailable to the cells.
Glucose –> Lactic acid.
What do we call anaerobic respiration in yeast cells and what is the word equation for this?
Fermentation,
Glucose –> Ethanol + Carbon Dioxide.
Name three changes that the body makes during exercise to increase the supply of oxygenated blood to the muscles.
Breathing rate,
Breath volume,
Heart rate.
What is oxygen debt?
The amount of extra oxygen your body needs to react with the build- up lactic acid and remove it from the cells.
In which organ is lactic acid converted back to glucose?
The Liver.
In the inverse square law, how are Light Intensity and distance linked?
If you ‘/2’ the distance, the light intensity will be ‘4x’ greater and if you ‘/3’ the distance, the light intensity will be ‘9x’ greater.
