Flashcards in Respiration Deck (21):
What is the sugar that is the main source of energy in living cells?
What is respiration?
A chemical process in which energy is released from the breakdown of glucose
What is ATP?
A high energy compound synthesised using energy from the breakdown of glucose
What is the chemical formed by the breakdown of glucose in glycolysis?
What is the first stage of all types of respiration in which glucose is broken down to pyruvate?
What is aerobic respiration?
It is the process of releasing energy from glucose using oxygen
What is anaerobic respiration?
It is the breakdown of glucose in cells in the absence of oxygen
What is the chemical formed as the end product of anaerobic respiration in animal cells?
What is fatigue?
A condition that results from a lack of oxygen and build-up of lactic acid in muscle cells
What is the chemical formed along with carbon dioxide as the end products of anaerobic respiration in plant and yeast cells?
Give reasons why cells need energy?
~cell division and growth
~transmissions of nerve impulses
What is the reason for having a series of reactions?
The energy is released slowly in small amounts and avoids damage to the cell
What is the equation for aerobic respiration?
Glucose + oxygen --> carbon dioxide and water
What is the equation for anaerobic respiration in animals?
Glucose --> lactic acid
What is the equation for anaerobic respiration in plant and yeast cells?
Glucose --> ethanol and carbon dioxide
What happens in the first stage of aerobic respiration (glycolysis)?
Glucose produces pyruvate through a series of enzyme controlled reactions
How many ATP are produced in aerobic respiration?
Stage 1: 2
Stage 2: 36
What happens during the second stage of aerobic respiration (breakdown of pyruvate)?
Pyruvate is broken down using oxygen to produce carbon dioxide and water through a series of enzyme-controlled reactions
How many ATP molecules are produced in anaerobic respiration?
Stage 1: 2
Stage 2: 0
Where does aerobic respiration take place?