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Class 11 Respiration in Plants worksheet
CBSE Biology. Glycolysis, fermentation, Krebs cycle, electron transport, ATP yield, RQ. Every sheet has 20 questions in three sections and an answer key, and the numbers change every time.
Sample questions
Real questions from this chapter, as the app sets them. Tap Answer to see the answer and working.
Section A · multiple choice
- 1.
Glycolysis takes place in the:
- inner mitochondrial membrane
- chloroplast
- mitochondrial matrix
- cytoplasm
Answer
(d) cytoplasm
- 2.
The net ATP gained from 4 molecules of glucose by fermentation is:
- 8
- 152
- 144
- 16
Answer
(a) 8
2 per glucose, from glycolysis only
- 3.
Where does the build-up of protons pumped by the electron transport system take place?
- The cytoplasm
- The mitochondrial matrix
- The inner mitochondrial membrane
- The inter-membrane space of the mitochondrion
Answer
(d) The inter-membrane space of the mitochondrion
Section B · short answer
- 4.
What is the difference between aerobic respiration and fermentation?
Answer
Aerobic respiration needs oxygen and breaks glucose completely to CO₂ and water, giving about 38 ATP. Fermentation happens without oxygen and breaks glucose only partly, to ethanol and CO₂ or lactic acid, giving only 2 ATP.
- 5.
How many ATP are made in the electron transport system from 13 NADH and 8 FADH₂?
Answer
55
13 × 3 + 8 × 2
Section C · long answer
- 6.
Describe glycolysis.
Answer
In the cytoplasm, glucose is phosphorylated using 2 ATP to fructose 1,6-bisphosphate, which splits into two triose phosphates (PGAL). Each is oxidised to 1,3-bisphosphoglycerate, reducing NAD⁺ to NADH; then ATP is made directly (substrate-level phosphorylation) twice per triose as it becomes pyruvic acid. Per glucose: 4 ATP made, 2 used, net 2 ATP, 2 NADH and 2 pyruvic acid.
Fresh sheets for your child
In the app, every Respiration in Plants sheet is new: the app remembers the questions your child has already had and leaves them out. Print the sheet as a PDF, or use notebook mode and write the answers in a notebook.
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