The energy-releasing process in which the substrate is oxidized without an external electron acceptor is called:
1. fermentation
2. photorespiration
3. aerobic respiration
4. glycolysis
Subtopic: Fermentation |
65%
Level 2: 60%+
AIPMT - 2008
Please attempt this question first.
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Please attempt this question first.
Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms.
| 1. | absence of resin duct and leaf venation |
| 2. | presence of vessel elements and absence of archegonia |
| 3. | periandl and two integuments |
| 4. | embryo development and apical meristem |
Subtopic: Examples of Gymnosperms |
67%
Level 2: 60%+
AIPMT - 2008
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Thorn of Bougainvillea and tendril of Cucurbita are examples of:
| 1. | analogous organs | 2. | homologous organs |
| 3. | vestigial organs | 4. | retrogressive evolution |
Subtopic: Theory of Evolution & Lamarckism |
88%
Level 1: 80%+
AIPMT - 2008
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What is true about the isolated small tribal populations?
| 1. | There is a decline in population as boys marry girls only from their own tribe |
| 2. | Hereditary diseases like colour blindness do not spread in isolated populations |
| 3. | Wrestlers who develop strong body muscles in their lifetime pass this character on to their progeny |
| 4. | There is no change in population size as they have a large gene pool |
Subtopic: Population Genetics | Hardy Weinberg Law: 1 | Hardy Weinberg Law |
Level 3: 35%-60%
AIPMT - 2008
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Human insulin is being commercially produced from a transgenic species of:
1. Escherichia
2. Mycobacterium
3. Rhizobium
4. Saccharomyces
Subtopic: Med Applications & Humulin |
92%
Level 1: 80%+
AIPMT - 2008
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In the light of recent classification of living organisms into three domains of life (bacteria. archaea and eukarya), which one of the following statement is true about archaea?
| 1. | Archaea resemble eukarya in all respects. |
| 2. | Archaea have some novel features that are absent in other prokaryotes and eukaryotes. |
| 3. | Archaea completely differ from both prokaryotes and eukaryotes. |
| 4. | Archaea completely differ prokaryotes. |
Subtopic: Kingdom Monera: Bacterial Cell Structure | Kingdom Monera: Bacterial Classification |
74%
Level 2: 60%+
AIPMT - 2008
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Thermococcus. Methanococcus and Methanobacterium exemplify:
| 1. | archaebacteria that contain protein homologous to eukaryotic core histones |
| 2. | archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled |
| 3. | bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria |
| 4. | bacteria that contain a cytoskeleton and ribosomes |
Subtopic: Kingdom Monera: Bacterial Classification |
Level 3: 35%-60%
AIPMT - 2008
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A competitive inhibitor of succinic dehydrogenase is:
| 1. | malonate | 2. | oxaloacetate |
| 3. | α-ketoglutarate | 4. | malate |
Subtopic: Enzyme Inhibition: Introduction | Enzyme Inhibition |
90%
Level 1: 80%+
AIPMT - 2008
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Links
Cry-IAc endotoxins obtained from Bacillus thuringiensis are effective against:
| 1. | mosquitoes | 2. | flies |
| 3. | nematodes | 4. | bollworms |
Subtopic: Bt Crops |
91%
Level 1: 80%+
AIPMT - 2008
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Vacuole in a plant cell:
| 1. | is membrane-bound and contains storage proteins and lipids |
| 2. | is membrane-bound and contains water and excretory substances |
| 3. | lacks membrane and contains air |
| 4. | lacks membrane and contains water and excretory substances |
Subtopic: Vacuole |
86%
Level 1: 80%+
AIPMT - 2008
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