Aerobic cellular respiration in humans and other organisms | Combined science

Starter quiz

True or false? All living organisms carry out respiration.

True ✓

False
In which sub-cellular structure of an animal or plant cell does cellular respiration take place?

'mitochondria' ✓
What is the chemical formula for glucose?

C $_6$ H $_6$ O $_6$

C $_6$ HO $_6$

C $_6$ HO $_1$ $_2$

C $_6$ H $_1$ $_2$ O $_6$ ✓
What does aerobic mean?

occurring in the presence of carbon dioxide

occurring in the presence of oxygen ✓

occurring in the absence of oxygen

occurring in the absence of carbon dioxide
What is the difference between prokaryotic and eukaryotic cells?

Prokaryotic cells have a nucleus and eukaryotic cells don't.

Eukaryotic cells have membrane-bound organelles and prokaryotic cells don't. ✓

Prokaryotic cells don't have a cell membrane and eukaryotic cells do.

Prokaryotic cells have a cell wall and eukaryotic cells don't.

Eukaryotic cells have a cell wall and cell membrane and prokaryotic cells don't.
Which type of reaction transfers energy to the surroundings?

endothermic

exothermic ✓

True or false? Respiration only takes place during the day.

True

False ✓
Which is the balanced symbol equation for respiration?

$6$ O $_2$ + C $_6$ H $_6$ O $_6$ --> $3$ H $_2$ O + $6$ CO $_2$

$6$ O $_2$ + C $_6$ H $_6$ O $_6$ --> $1$ $2$ H $_2$ O + $6$ CO $_2$

$6$ O $_2$ + C $_6$ H $_1$ $_2$ O $_6$ --> $6$ H $_2$ O + $6$ CO $_2$ ✓
Cellular respiration is an __________ reaction.

exothermic ✓

endothermic
Where do humans obtain the glucose that they need for respiration?

through photosynthesis

eating sugar and carbohydrates ✓

through exercise
Which of the following statements are correct about cellular respiration?

It takes in light energy from the sun.

It is a process that creates energy for cells.

Cells use glucose as a fuel in cellular respiration. ✓

It provides energy to cells. ✓

Cells use carbon dioxide as a fuel in cellular respiration.
Where does cellular respiration take place in eukaryotic cells?

nucleus

ribosomes

mitochondria ✓

chloroplasts

cell membrane

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Cellular respiration happens continuously in all living organisms to transfer the energy needed for life processes.
Cellular respiration is an exothermic chemical process that uses glucose as a fuel.
Word equation and balanced symbol equation summarises the reactants and products of aerobic cellular respiration.
Aerobic cellular respiration takes place in the mitochondria of eukaryotic cells.
Aerobic cellular respiration takes place in the cytoplasm of prokaryotic cells, which do not have mitochondria.

Students frequently write in exams that respiration "creates" energy.

This lesson contains checks and practice tasks that address this misconception.

Cellular respiration - an exothermic chemical process that transfers energy for life processes, using glucose as a fuel
Exothermic - a chemical process that transfers energy to its surroundings
Aerobic - a process that requires oxygen
Mitochondria - sub-cellular structures involved in aerobic cellular respiration