DNA from Salmonella species, when digested with the restriction enzyme Xba I, gives around 15 fragments ranging from 25 kb to 680 kb This pattern of fragments, or ‘fingerprint’, is unique to that strain. If the same fingerprint is found from bacteria from other infected people, then it can be assumed that they were all infected from a common source. Thus, by comparing their eating habits, food sources, etc. the source of the infection can be traced to a restaurant, food item. The fingerprints are created and analysed by

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#Question id: 44

#I Life Science/ Life Sciences Group – I-V

The four covalent bonds in methane (CH4) are arranged around carbon to give which one of the following geometries?

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#Question id: 5041

#I Life Science/ Life Sciences Group – I-V

Which one of the following developmental processes in animals is not dependent on cellular movements?

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#Question id: 404

#SCPH01 Biochemistry

When a mixture of 3-phosphoglycerate and 2-phosphoglycerate is incubated at 25 °C with phosphoglycerate mutase until equilibrium is reached, the final mixture contains six times as much 2-phosphoglycerate as 3-phosphoglycerate.  Which one of the following statements is most nearly correct, when applied to the reaction as written?  (R = 8.315 J/mol·K; T = 298 K)  3-Phosphoglycerate -> 2-phosphoglycerate

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#Question id: 23198

#SCPH06 I Botany

The commonly used heavy metals in staining for electron microscopy are.

1. Uranium

2. Gold

3. Lead

4. Osmium

5. Platinum

Which of the following option has correct combination?

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#Question id: 10803

#SCPH05 I Biotechnology

Which of the following are not consider as nitrogen-containing secondary metabolites?