TLS Online TPP Program

#Question id: 4347


According to the lac operon model proposed by Jacob and Monod, what is predicted to occur if the operator is removed from the operon?

#Part-A Aptitude & General Biotechnology
  1. The lac operon would be transcribed continuously.

  2. Only lacZ would be transcribed.

  3. Only lacY would be transcribed.

  4. Galactosidase permease would be produced, but would be incapable of transporting lactose.

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TLS Online TPP Program

#Question id: 8924

#Part-B Specialized Branches in Biotechnology

Fossil evidence indicates that the following events occurred in what sequence, from earliest to most recent?
1. Protostomes invade terrestrial environments.
2. Cambrian explosion occurs.
3. Deuterostomes invade terrestrial environments.
4. Vertebrates become top predators in the seas.

TLS Online TPP Program

#Question id: 8925

#Part-A Aptitude & General Biotechnology

What is the probable sequence in which the following clades of animals originated, from earliest to most recent?
1. tetrapods
2. vertebrates
3. deuterostomes
4. amniotes
5. bilaterians

TLS Online TPP Program

#Question id: 8926

#Part-A Aptitude & General Biotechnology

Sponges and cnidarians are among the fossilized animals found in both the Ediacara Hills and the Burgess Shale from the Rocky Mountains of British Colombia. This observation requires that

TLS Online TPP Program

#Question id: 8926

#Part-B Specialized Branches in Biotechnology

Sponges and cnidarians are among the fossilized animals found in both the Ediacara Hills and the Burgess Shale from the Rocky Mountains of British Colombia. This observation requires that

TLS Online TPP Program

#Question id: 8927

#Part-A Aptitude & General Biotechnology

Arthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that

TLS Online TPP Program

#Question id: 8927

#Part-B Specialized Branches in Biotechnology

Arthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that