Practice Questions

TLS Online TPP Program

#Question id: 12285

The principle of competitive exclusion states that

#Unit 10. Ecological Principles

Two species cannot coexist in the same habitat.
Competition between two species always causes extinction or emigration of one species.
Competition in a population promotes survival of the best-adapted individuals.
Two species that have exactly the same niche cannot coexist in a community.

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TLS Online TPP Program

#Question id: 20051

#Unit 13. Methods in Biology

An excess of antibody inhibits precipitation reactions, such excess can also inhibit agglutination reaction this inhibition is called___

TLS Online TPP Program

#Question id: 20052

#Unit 13. Methods in Biology

HCG-kit is based on the phenomenon of

TLS Online TPP Program

#Question id: 20385

#Unit 13. Methods in Biology

PCR primer dimers are formed when

TLS Online TPP Program

#Question id: 20386

#Unit 13. Methods in Biology

Within the human population there are millions of single base variations, called

TLS Online TPP Program

#Question id: 20538

#Unit 12. Applied Biology

Aromatic hydrocarbons including benzene, toluene, ethylbenzene and xylene collectively referred as BTEX compounds. Which of them is considered as carcinogenic?

TLS Online TPP Program

#Question id: 20540

#Unit 12. Applied Biology

Toluene, ethylbenzene and xylene must be kept to ________levels in drinking and recreational waters due to their toxicity