Practice Questions

TLS Online TPP Program

#Question id: 15595

How might the function of extracellular endonucleases help protect the bacterium from infection by viruses?

#Unit 8. Inheritance Biology

They would prevent the virus from binding to the outside of the bacterial cell.
They would destroy the viral coat, so it cannot inject its genetic material
They would destroy cut the viral DNA into small pieces
All of the above.

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TLS Online TPP Program

#Question id: 15953

#Unit 12. Applied Biology

In carrot, which Nitrogen Source is essential during SE induction?

TLS Online TPP Program

#Question id: 15954

#Unit 12. Applied Biology

some given other factors are reported to affect Somatic embryo (SE) regeneration such as

a) high K+ levels and low dissolved O2 levels promote SE regeneration

b) some volatile compounds like ethanol promote SE regeneration

c) low sucrose concentrations inhibit SE regeneration

d) use of sucrose as carbon source improves both SE induction and maturation as compared to maltose

Which of the following statement must not be true about SE regeneration?

TLS Online TPP Program

#Question id: 15955

#Unit 12. Applied Biology

Protoplast culture is applicable for

TLS Online TPP Program

#Question id: 15956

#Unit 12. Applied Biology

Transplantation of foreign chloroplasts into crop plants with inefficient photosynthetic system applied by

TLS Online TPP Program

#Question id: 15957

#Unit 12. Applied Biology

The technique of somatic hybridization involves the following steps;

TLS Online TPP Program

#Question id: 15958

#Unit 12. Applied Biology

During the protoplast fusion which technique is most commonly used as it induces reproducible high frequency fusion accompanied with low toxicity to most cell types?