BASICS
What is cellular respiration?
Process that breaks down glucose using oxygen to make ATP.
What is the first step of aerobic respiration?
Glycolysis
Which type of respiration requires oxygen?
Aerobic Respiration
When does fermentation occur?
When there is not enough oxygen.
What is the chemical formula for cellular respiration?
C6H12O6 + O2 → CO2 + H2O + ATP
What two raw materials are needed for cellular respiration?
Glucose and oxygen
What step occurs in the mitochondria and releases carbon dioxide?
Krebs Cycle
Which type of respiration does NOT require oxygen?
Anaerobic respiration (fermentation).
What is the goal of fermentation?
To allow glycolysis to continue.
Why can most cells not survive on anaerobic respiration alone?
It only produces 2 ATP — not enough energy
What two waste products are made during cellular respiration?
Carbon dioxide and water
What step produces the most ATP? How many ATP produced?
Electron Transport Chain; 32 ATP produced
How many ATP are produced during aerobic respiration?
36 ATP
What type of fermentation is used in bread-making?
Alcoholic fermentation
Why do muscle cells have more mitochondria than skin cells?
They need more energy
Where does cellular respiration mainly take place in the cell?
Mitochondria
Put these steps in order: Glycolysis, Krebs Cycle, Electron Transport Chain.
Glycolysis → Krebs Cycle → Electron Transport Chain
How many ATP are produced during anaerobic respiration?
2 ATP
What type of fermentation occurs in human muscle cells?
Lactic acid fermentation
Why do you breathe faster during exercise?
To bring in more oxygen and remove carbon dioxide
What is the main purpose of cellular respiration?
To produce ATP
Which step requires oxygen directly?
ETC
What substance builds up in muscles during intense exercise?
What gas causes bread to rise?
Carbon dioxide
Why do plants still need cellular respiration?
To break down glucose and make ATP