energy use. what is the main original source of energy?
Post on 28-Dec-2015
221 Views
Preview:
TRANSCRIPT
Energy Use
• What is the main original source of energy?
• The sun
What is this graph showing?
• Enzymes lower the energy needed by the cell.
• What is the formula for photosynthesis?
• 6CO2 + 6H2O ---Sunlight---> C6H12O6 + 6O2
• What organelle does photosynthesis take place in?
• The chloroplast
• What gas does photosynthesis need as a reactant?
• CO2
• What type of organism is a plant?
• An autotroph
• What type of organisms need the cellular respiration process?
• Any organism that needs to break down food molecules to release stored energy.
• What biomolecule are enzymes or catalysts?
• proteins
• When do plants go through cellular respiration?
• When they are germinating, before they make leaves for photosynthesis
• In a human, what is the optimal body temperature by which enzymes will work?
• 98.6 degrees F
• What two types of energy are required during digestion?
• Mechanical and chemical
• What is an example of mechanical digestion?
• Chewing• peristalsis
• Give and example of how chemicals help speed digestion.
• Amylase=carbohydrates• Lipase=lipids
• What would happen if the enzymes in your body became too hot from a high temperature?
• They would change shape, hence the active site would be destroyed.
• How could catalysts be sped up?
• Increase the levels of enzymes.
• What are competitive and non-competitive inhibitors?
• They prevent substrates from contacting the enzyme.
• What is an induced fit and lock and key model?
An enzyme must have its active site fit specifically to the substrate (lock and key). Once it does it puts a firm hold around it (induced fit).
• What other organs help produce enzymes along the digestive tract?
• The pancreas
• Where does food get absorbed along the digestive tract?
• The small intestine
• Where does the food go once it is absorbed from the small intestine?
• Into the bloodstream-> to the cells
• What is required for cellular respiration?
• C6H12O6 + 6O2 → 6CO2 + 6H2O + Energy
• What organelle does cellular respiration take place in?
• The mitochondria
• Once cellular waste is produced, where does it need to go?
• Back into the bloodstream then to the kidneys to be filtered out into urine.
• Into the bloodstream ->to the lungs-> then exhaled
• Why do we need energy?
• To grow (mitosis and meiosis)• To move• Transport substances across cell membranes
top related