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?

#Unit 11. Evolution and Behavior

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: 10341

#Unit 6. System Physiology – Plant

The accumulation of nitrate that results from diminished nitrate reductase activity, this symptoms is caused by

TLS Online TPP Program

#Question id: 11842

#Unit 6. System Physiology – Plant

What is the function of EIN3 in ethylene signalling pathway?

TLS Online TPP Program

#Question id: 3300

#Unit 11. Evolution and Behavior

In a population individuals having heterozygous phenotype are more favored than either homozygous, under such condition-

TLS Online TPP Program

#Question id: 788

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is true about Z-DNA helix?

TLS Online TPP Program

#Question id: 18972

#Unit 9. Diversity of Life Forms

Beginning with the germination of a moss spore, what is the sequence of structures that develop after germination?

1. Embryo 2. Gametes

3. Sporophyte 4. Protonema