Cellular Respiration Flashcards
The definition and knowledge about cellular respiration
What is Cellular Respiration?
Cellular Respiration is the controlled release of energy from organic compounds to producte ATP
What is ATP?
ATP is a source of energy for cellular processes.
Is Cellular Respiration Catabolic or Anabolic?
Catabolic, because it is the breakdown of organic molecules to produce ATP energy.
What are some processes that require energy in our body?
Anabolic processes, Active transport, Muscle contraction
(NOTE) What is ATP converted to when releasing its energy?
it is converted to ADP and phosphate when releasing its energy, ADP and phosphate can then be re-converted to ATP during respiration.
Compare the oxidation of glucose in aerobic respiration with the oxidation of glucose in anaerobic respiration
Glucose is only partially oxidised in anaerobic respitation, which means only part of its chemical energy is released and transferred to ATP.
How many more ATP molecules are produced when respiring aerobically?
Respiring Aerobically produces 36 more ATP molecules. However, anaerobic respiration can produce a qucik discharge of energy since 2 molecules of ATP are better than 0.
Why can’t anaerobic respiration produce more energy?
The only ATP-producing reaction that occurs is the first stage of respiration (which produces around 2 ATP molecules per molecule of glucose). None of the following reactions can then occur due to the lack of oxygen.
What do animal produce in anaerobic respiration, and what do plants and yeast produce.
Plants and yeasts produce ethanol and CO2 , while animals produce lactate
Outline anaerobic respiration in animals.
Glucose is metabolized into lactate when oxygen can’t be supplied quickly enough, Lactate starts building up and accumulating in cells and tissue and can cause discomfort because it becomes toxic after a certain level, therefore has to be broken down aerobically later, which leads to oxygen debt. Which is one one needs extra oxygen to break down excess lactate
What is Aerobic respiration and what is Anaerobic respiration?
Aerobic respiration is cellular respiration that uses oxygen and yields large amounts of ATP, anaerobic respiration is respiration that occurs in the lack of oxygen and yields less ATP>
Why can aerobic respiration produce more energy?
It produces more ATP molecules (36), it can produce more ATP because glucose is fully broken down into CO2 and water in it.
What are Respirometers?
They are used to measure the rate of oxygen consumption in organisms.
What are the “features” of a typical respirometer?
A closed space with air and a living organism, an alkaline solution (eg: potassium hydroxide) to absorm CO2, A capillary tube connected to the container and set against a graduated scale
(manometer)
Outline how a respirometer works?
Organisms respire aerobically and use oxygen in the air, CO2 is absorbed by alkaline solution, air pressure drops significantly (can be seen on manometer).
Note: temperature should be strictly kept constant to maintain pressure change.
