2.34-2.39 - Respriation Flashcards
What is Respiration?
-Respriation is a chemical reaction that takes place in all living organisms
-Energy is released from glucose either in the presence of oxygen(aerobic respriation)
Or in the absence of oxygen(anaerobic respriation)
-Energy is transferred in the form of ATP
What is ATP?
-Organisms need energy for things such as,
-chemical reactions to build up larger molecules from smaller molecules
-Muscle contraction to allow movement
-keeping warm to maintain a constant tempreture suitable for enzyme activity
-The chemical proccess of cellular respriation releases energy from glucose
-ATP produced in respriation in the mitochondria, is required for living processes to occour
In cells and organisms
What are the conditions for the different respirations?
What is aerobic respiration?
-Aerobic respriation requires oxygen it is defined as the chemical reaction in cells that uses oxygen to break down nutrient molecules to release energy
-Aerobic respriation is the complete break down of glucose to release a relatively large amount of energy for uses in cell proccesses and reactions
-Carbon dioxide and water are the waste products produced
What is Anaerobic respiration?
-Anaerobic respriation does not require oxygen
-The chemical reaction in cells that breaks down neutrients molecules to release energy without it using oxygen
-It involves the incomplete break down of glucose and so releases a relatively small amount of energy for use in cell processes
How does anaerobic respiration occour in animal cells?
-Anaerobic respriation mainly takes place in muscle cells during vigorous excerise
-When we excerise at high intensities there is a higher demand for energy
-Bodies can only deliver so much oxygen to our muscle cells for aerobic respriation
-When oxygen runs out glucose is broken down without it producing lactic acid
How does lactic acid form?
-Lactic acid builds up in muscles and lowers the pH of the tissue making them more acidic
-Acidic conditions can denature enzymes in cells
-Lactic acid will eventually be broken down using oxygen creating co2 and water as waste products
-The amount of oxygen required to break down the lactic acid is known as oxygen debt
How does Anaerobic respiration occour in plants and fungi?
-Plants and yeast can respire without oxygen breaking down the glucose in the absence to the oxygen producing ethonal and carbon dioxide
What are the equation for Aerobic respiration?
What is the equation for Anaerobic respiration?
