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TLS Online TPP Program

#Question id: 5214

What is the most probable explanation for the continued presence of pseudogenes in a genome such as our own?

#Unit 9. Evolution & Diversity of Life Forms

  1. They are genes that had a function at one time, but that have lost their function because they have been translocated to a new location.

  2. They are genes that have accumulated mutations to such a degree that they would code for different functional products if activated.

  3. They are duplicates or near duplicates of functional genes but cannot function because they would provide inappropriate dosage of protein products.

  4. They are genes that are not expressed, even though they have nearly identical sequences to expressed genes.

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TLS Online TPP Program

#Question id: 20846

#Unit 13. Advances in Biotechnology

Nitrate is energetically the best electron acceptor under anoxic conditions and is generally used preferentially by which type of microbes?
TLS Online TPP Program

#Question id: 20847

#Unit 13. Advances in Biotechnology

In groundwater hydrocarbon spill which metal reduction was the major electron accepting process?
TLS Online TPP Program

#Question id: 20848

#Unit 13. Advances in Biotechnology

In which form does reduction was the major electron accepting process close to a groundwater hydrocarbon spill while methanogenesis predominated downgradient from the spill.
TLS Online TPP Program

#Question id: 20982

#Unit 13. Advances in Biotechnology

Which is considered as the most recalcitrant of the BTEX compounds, and of greatest regulatory concern because of its associated health impacts?
TLS Online TPP Program

#Question id: 20983

#Unit 13. Advances in Biotechnology

Which is considered as less recalcitrant out of the BTEX compounds, and of lesser regulatory concern?
1. Xylene
2. Ethylbenzene
3. Toluene
4. Benzene
Which of the below combinations are correct?
TLS Online TPP Program

#Question id: 20984

#Unit 13. Advances in Biotechnology

Benzene being the most recalcitrant was earlier believed to be