Which of the following is produced by the trophoblast cells during the first 3 weeks of pregnancy?

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#Question id: 7498

#General Aptitude

Two trains of length 250 m and 140 m are running on parallel lines in the same direction at 58 km/h and 32 km/h respectively. Find the time taken by the slower train to pass the driver of the faster one.

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#Question id: 4428

#Unit 3. Fundamental Processes

The architectural transcription factor Lef-1

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#Question id: 20846

#Unit 12. Applied Biology

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

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#Question id: 3632

#Unit 8. Inheritance Biology

geneticist is working with a new bacteriophage called phage Y3 that infects E. coli. He has isolated eight mutant phages that fail to produce plaques when grown on E. coli strain K. To determine whether these mutations occur at the same functional gene, he simultaneously infects E. coli K cells with paired combinations of the mutants and looks to see whether plaques are formed. He obtains the following results. (A plussign means that plaques were formed on E. coli K; a minussign means that no plaques were formed on E. coli K.)

How many cistron belong to these mutation?

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#Question id: 15880

#Unit 12. Applied Biology

 Which one types of culture is ideal for the determination of effects of individual nutrients on cell growth and metabolism.