Practice Questions

TLS Online TPP Program

#Question id: 4602

If the bacterium Staphylococcus aureus experiences a cost for maintaining one or more antibiotic-resistance genes, what would happen in environments that lack antibiotics?

#XL - S Microbiology

These genes would be maintained in case the antibiotics appear.
These bacteria would be outcompeted and replaced by bacteria that have lost these genes.
These bacteria would try to make the cost worthwhile by locating and migrating to microenvironments where traces of antibiotics are present.
The number of genes conveying antibiotic resistance would increase in these bacteria.

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TLS Online TPP Program

#Question id: 5741

#XL - S Microbiology

In a mammal 2 Barr bodies are observed. How many X chromosomes does the organism have?

TLS Online TPP Program

#Question id: 15225

#XL - Q Biochemistry

Which electrophoresis used to separate complete chromosome

TLS Online TPP Program

#Question id: 17670

#XL - R Botany

The following are common to both charophytes and land plants except

TLS Online TPP Program

#Question id: 13031

#XL - S Microbiology

Use of alkaline solution in southern blotting helps in :

TLS Online TPP Program

#Question id: 7705

#XL - T Zoology

Based on this tree, which statement is correct?