Following statement regarding to the cascade of regulated RNA splicing controls drosophila sexual differentiation.

A. The Sex-lethal (Sxl) protein, encoded by the sex-lethal gene, is the first protein to act in the cascade and present only in female embryos.

B. Early in development, the Sxl gene is transcribed from a promoter that functions only in male embryos.

C. Later in development, this male-specific promoter is shut off, and another promoter for sex-lethal becomes active in both male and female embryos.

D. In male embryos, however, in the absence of early Sxl protein, exon 3 of the sex-lethal pre-mRNA is spliced to exon 2 to produce an mRNA that contains a stop codon early in the sequence.

Which of the following is correct?

TLS Online TPP Program

#Question id: 20994

#Unit 12. Applied Biology

Some examples of bacteria involved in toluene degradation activity are

1. Pseudomonas

2. Thiobacillus

3. Geobacter metallireducens

4. Psychrophile

Which of the below combinations are correct?

TLS Online TPP Program

#Question id: 20993

#Unit 12. Applied Biology

Toluene decay by the denitrifying pseudomonas sp. Strain k172 is done. The enzymes involved in degradation pathway are   

1.  Benzyl alcohol dehydrogenase

2.  Benzaldehyde dehydrogenase

3.  Benzoyl-coa synthetase 

Which of the below combinations are correct?

TLS Online TPP Program

#Question id: 20987

#Unit 12. Applied Biology

Toluene degradation could be optimized and linked to the reduction of 

1. Nitrate 

2. Nitrous oxide

3. Nitrite

Which of the below combinations are correct?

TLS Online TPP Program

#Question id: 20983

#Unit 12. Applied Biology

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: 20711

#Unit 12. Applied Biology

During the electron transfer process, usable energy is recovered via a series of redox reactions through the formation of 

1. Energy storage compounds 

2. Electrochemical gradients

3. Vacoules

Which of the below combinations are correct?

TLS Online TPP Program

#Question id: 20539

#Unit 12. Applied Biology

Aromatic hydrocarbons including benzene, toluene, ethylbenzene and xylene collectively referred as BTEX compounds. Which of them are not considered as carcinogenic?

1. Benzene

2. Toluene

3. Ethylbenzene

4. Xylene

Which of them is a correct option?