Topic 12 Flashcards
(12 cards)
Give 7 uses of energy in the body
Protein synthesis, Muscle contraction, Cell division, Active transport, Growth, Nervous transmission, Maintaining a constant internal environment
What is respiration?
A series of reactions that use enzymes to obtain energy in the form of ATP from larger molecules (e.g. glucose)
Define aerobic respiration
Chemical reactions in cells that use oxygen to break down molecules to release energy
What is the word equation for aerobic respiration?
Glucose + Oxygen → Carbon dioxide + Water (+ energy)
What is the symbol equation for aerobic respiration?
C6H12O6 + 6O2 → 6CO2 + 6H2O (+energy)
Define anaerobic respiration
Chemical reactions in cells that break down nutrient molecules to release energy without using oxygen
Write the word equation for anaerobic respiration in muscle cells
glucose → lactic acid + energy
Write the word equation for anaerobic respiration in yeast?
glucose → alcohol + carbon dioxide + energy
Which type of respiration produces more energy?
Aerobic respiration produces more energy
What builds up in muscles during periods of vigorous exercise?
Lactic acid
How is lactic acid removed from the body?
Through aerobic respiration in the liver- oxygen is used to break the lactic acid down to carbon dioxide and water
What happens to the heart and breathing rate immediately after exercise?
They both remain high to increase the rate of aerobic respiration to remove the lactic acid in the liver
