Practice Questions

TLS Online TPP Program

#Question id: 4127

Which one of the following statements about ribosomes is true?

#Unit 3. Fundamental Processes

The large subunit contains rRNA molecules, the small subunit does not.
The RNA in ribosomes plays a structural, not catalytic, role.
There are about 25 of them in an E. coli cell.
There are two major subunits, each with multiple proteins.

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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

TLS Online TPP Program

#Question id: 20541

#Unit 12. Applied Biology

Why do bacteria oxidize BTEXs and other organic pollutants?