Delivery Guide - Cellular respiration
Learner Resource 4
Instructions – Print out and cut into strips, giving one strip to each student. 20 strips have been
included – you may need to add more for bigger groups, or give some student 2 strips if your class
is small. Ask who has a strip that says start. Ask that student to read the question on the right hand
side of their strip. The class member with the correct answer should say the answer and then read
their question. This should continue until you get back to the student who started the loop.
This activity requires full concentration and participation of all class members.
Approximately 30 molecules of ATP (research
continues and controversy rages!)
Start. Which organelle is the site of ATP
production?
Mitochondria
In which part of the cell does glycolysis occur?
Cytoplasm
During glycolysis, glucose is converted into 2
molecules of…
Pyruvate
The first stage of glycolysis involves adding
phosphate to glucose, a process known as…
Phosphorylation
How many carbon atoms are in one pyruvate
molecule?
3
Other than pyruvate, what are the products of
glycolysis?
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4 ATP, 2 reduced NAD
What type of enzyme catalyses the removal of
hydrogen atoms during glycolysis?
Dehydrogenase
Where in the cell do the link reaction and
Krebs cycle occur?
Mitochondrial matrix
How many carbon atoms are present in the
acetyl group of acetyl CoA?
2
As well as acetyl CoA, what is produced during
the link reaction?
Reduced NAD, carbon dioxide
The acetyl group from acetyl CoA combines
with oxaloacetate in the Krebs cycle to
produce a 6 carbon compound called...
Citrate
How many turns of the Krebs cycle are there
for each molecule of glucose?
2
What is produced when citrate is
dehydrogenated and decarboxylated?
A 5 C compound, CO2, reduced NAD
How many times does this 5 C compound
need to be decarboxylated to produce
oxaloacetate?
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Once
What else is produced during this part of the
Krebs cycle?
CO2, reduced NAD, reduced FAD and ATP
Where in a mitochondrion are the electron
carriers needed for the electron transport chain
situated?
In the inner mitochondrial membranes
What is pumped into the intermembrane
space?
Protons (H+)
What do these protons flow through to return
to the mitochondrial matrix?
Ion channels associated with the enzyme ATP
synthase
What happens to the protons and electrons at
the end of oxidative phosphorylation?
They combine with oxygen to produce water
What is the potential yield of ATP from one
molecule of glucose?
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