31
Aerobic respiratory pathway is appropriately termed
- parabolic
- amphibolic
- anabolic
- catabolic.
AIPMT 2009
Respiration in Plants
Previous year questions with solutions · 2000 – 2026
42Questions
28Papers covered
2.97% ↑60.4%Weightage in 2026
’01
’02
’03
’04
’05
’06
’07
’08
’09
’10
’11
’13
’14
’15
’16
’17
’18
’19
’20
’21
’22
’23
’24
’25
’26
Year-wise statistics questions · papers · average per paper · weightage
| Year | Questions | Papers | Avg / paper | Weightage |
|---|---|---|---|---|
| 2026 | 3 | 2 | 1.5 | 2.97% ↑60.4% |
| 2025 | 1 | 1 | 1 | 1.85% ↓47.2% |
| 2024 | 4 | 2 | 2 | 3.51% ↑10.5% |
| 2023 | 2 | 1 | 2 | 3.17% ↓16.8% |
| 2022 | 5 | 2 | 2.5 | 3.82% ↑129% |
| 2021 | 1 | 1 | 1 | 1.67% ↓16.7% |
| 2020 | 1 | 1 | 1 | 2.00% ↓47% |
| 2019 | 2 | 1 | 2 | 3.77% ↑3.8% |
| 2018 | 2 | 1 | 2 | 3.64% ↑107.3% |
| 2017 | 1 | 1 | 1 | 1.75% ↑0.9% |
| 2016 | 2 | 2 | 1 | 1.74% ↑89.6% |
| 2015 | 1 | 2 | 0.5 | 0.92% ↓48.6% |
| 2014 | 1 | 1 | 1 | 1.79% ↓0.9% |
| 2013 | 2 | 2 | 1 | 1.80% ↑73% |
| 2011 | 1 | 2 | 0.5 | 1.04% ↓6.2% |
| 2010 | 1 | 2 | 0.5 | 1.11% ↓37.8% |
| 2009 | 1 | 1 | 1 | 1.79% ↓50.9% |
| 2008 | 2 | 1 | 2 | 3.64% ↓7.3% |
| 2007 | 2 | 1 | 2 | 3.92% ↑131.4% |
| 2006 | 1 | 1 | 1 | 1.69% ↑6.8% |
| 2005 | 1 | 1 | 1 | 1.59% ↓12.7% |
| 2004 | 1 | 1 | 1 | 1.82% ↓43.6% |
| 2003 | 2 | 1 | 2 | 3.23% ↑106.5% |
| 2002 | 1 | 1 | 1 | 1.56% ↓7.8% |
| 2001 | 1 | 1 | 1 | 1.69% |
32
The energy-releasing metabolic process in which substrate is oxidised without an external electron acceptor is called
- glycolysis
- fermentation
- aerobic respiration
- photorespiration
AIPMT 2008
33
The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because
- a proton gradient forms across the inner membrane
- there is a change in the permeability of the inner mitochondrial membrane toward adenosine diphosphate (ADP)
- high energy bonds are formed in mitochondrial proteins
- ADP is pumped out of the matrix into the intermembrane space
AIPMT 2008
34
The overall goal of glycolysis, Krebs' cycle and the electron transport system is the formation of
- ATP in one large oxidation reaction
- sugars
- nucleic acids
- ATP in small stepwise units
AIPMT 2007
35
All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membrane in eukaryotes and in cytosol in prokaryotes. This enzyme is
- isocitrate dehydrogenase
- malate dehydrogenase
- succinate dehydrogenase
- lactate dehydrogenase
AIPMT 2007
36
How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to CO2 and H2O yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal?
- 1
- 2
- 30
- 57
AIPMT 2006
37
During which stage in the complete oxidation of glucose are the greatest number of ATP molecules formed from ADP?
- Glycolysis
- Krebs' cycle
- Conversion of pyruvic acid to acetyl CoA
- Electron transport chain
AIPMT 2005
38
In glycolysis, during oxidation electrons are removed by
- ATP
- glyceraldehyde-3-phosphate
- NAD+
- molecular oxygen.
AIPMT 2004
39
In alcohol fermentation
- triose phosphate is the electron donor while acetaldehyde is the electron acceptor
- triose phosphate is the electron donor while pyruvic acid is the electron acceptor
- there is no electron donor
- oxygen is the electron acceptor.
AIPMT 2003
40
In which one of the following do the two names refer to one and same thing?
- Krebs' cycle and Calvin cycle
- Tricarboxylic acid cycle and citric acid cycle
- Citric acid cycle and Calvin cycle
- Tricarboxylic acid cycle and urea cycle
AIPMT 2003
41
How many ATP molecules are produced by aerobic oxidation of one molecule of glucose?
- 2
- 4
- 38
- 34
AIPMT 2002
42
Cytochrome is
- metallo flavo protein
- Fe containing porphyrin pigment
- glycoprotein
- lipid.
AIPMT 2001