How is breathing different from respiration?

Breathing moves air; respiration releases energy in cells

Respiration Quiz: Places, People and Key Facts

This respiration quiz covers aerobic and anaerobic respiration, glucose, oxygen, mitochondria, ATP, lactic acid in muscles and fermentation in yeast. Ten questions on places, people and key facts about how cells release energy.

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🎯 Daily Trivia Challenge • 🧠 10 Questions • ⏱️ 150 Seconds

Question 1 / 10 Time: 150s

Purpose
What is the purpose of cellular respiration?
Aerobic
Which gas does aerobic respiration need?
Products
What are the waste products of aerobic respiration?
Where
Where does most aerobic respiration happen?
Energy
What molecule stores energy for cells to use?
Muscles
What builds up in muscles during hard exercise without enough oxygen?
Yeast
What does yeast produce in anaerobic respiration?
Breathing
How is breathing different from respiration?
Yield
How many ATP molecules does aerobic respiration of one glucose yield, roughly?
Cycle
Which cycle in mitochondria is part of aerobic respiration?

Explanations: answer key for all 10 questions

Q1: What is the purpose of cellular respiration?
Answer: To release energy from food
It happens in every living cell.
Q2: Which gas does aerobic respiration need?
Answer: Oxygen
It releases the most energy.
Q3: What are the waste products of aerobic respiration?
Answer: Carbon dioxide and water
We breathe out the CO2.
Q4: Where does most aerobic respiration happen?
Answer: Mitochondria
They are the cell's power stations.
Q5: What molecule stores energy for cells to use?
Answer: ATP
ATP means adenosine triphosphate.
Q6: What builds up in muscles during hard exercise without enough oxygen?
Answer: Lactic acid
Breathing hard afterward repays the oxygen debt.
Q7: What does yeast produce in anaerobic respiration?
Answer: Alcohol and carbon dioxide
This is fermentation.
Q8: How is breathing different from respiration?
Answer: Breathing moves air; respiration releases energy in cells
Respiration is chemical.
Q9: How many ATP molecules does aerobic respiration of one glucose yield, roughly?
Answer: About 30 to 38
Anaerobic respiration yields only 2.
Q10: Which cycle in mitochondria is part of aerobic respiration?
Answer: Krebs cycle
Hans Krebs described it in 1937.

Respiration Quiz – How Cells Get Energy

Cellular respiration is the process cells use to release energy from food. In aerobic respiration, glucose reacts with oxygen inside mitochondria, producing carbon dioxide, water and lots of ATP, the molecule cells use as an energy currency.

When oxygen is short, cells can switch to anaerobic respiration. Human muscles make lactic acid during intense exercise, while yeast produces alcohol and carbon dioxide, a process used in baking and brewing.

Respiration and photosynthesis are partners. Plants make glucose and oxygen, and animals and plants use them in respiration, releasing carbon dioxide and water back to the environment.

What This Quiz Teaches

This quiz is for students learning about respiration.

Why cells respire
What aerobic respiration needs
Where it happens
What ATP is
What fermentation makes

Did You Know?

Cyanide stops respiration in mitochondria.
Brain cells use lots of glucose.
Hibernating animals slow respiration.
Some bacteria respire without oxygen.
Hans Krebs won the Nobel Prize in 1953.