TLS Online TPP Program

#Question id: 4547


Transcription always done in 

#Unit 3. Fundamental Processes
  1. 5′→3′ direction by extending 3’ elements and nucleophilic attack done by 3’OH

  2. 3’→5’direction by extending 5’ elements and nucleophilic attack done by 5’OPO34-

  3. 5′→3′ direction by extending 5’ elements and nucleophilic attack done by 3’OH

  4. 3’→5’direction by extending 3’ elements and nucleophilic attack done by 5’OPO34-

More Questions
TLS Online TPP Program

#Question id: 2890

#Unit 2. Cellular Organization

Match individual variant histones i) to iv) to one or more of the possible functions listed in a) to g).

Variant histones              Functions 

i) CENP-A                         a) DNA replication

ii) H2A.X                           b) As a barrier to stop heterochromatin spreading

iii) H2A.Z                          c) DNA repair

iv) H3.3                             d) Transcriptional activation

                                          e) Kinetochore assembly 

                                           f) Recombination

                                          g) Genome maintenance

TLS Online TPP Program

#Question id: 15342

#Unit 4. Cell Communication and Cell Signaling

The heavy chain is then expressed on the cell surface in combination with the surrogate light chain, which is made up of_______________, together they form the pre-B-cell receptor,

TLS Online TPP Program

#Question id: 32133

#Unit 1. Molecules and their Interaction Relevant to Biology

The structure shown here is 

TLS Online TPP Program

#Question id: 10922

#Unit 6. System Physiology – Plant

The non-reducing sugar sucrose is most commonly translocated in the phloem rather than reducing sugar. Why?

 a.) because they are less reactive than their reducing counterparts

 b.) because sucrose contains more energy than a monosaccharides

 c.) because the ketone or aldehyde group is reduced to an alcohol or combined with a similar group on another sugar so as not to be oxidized

 Which one of the following statements is true about translocation of non-reducing sugar?

TLS Online TPP Program

#Question id: 33281

#Unit 2. Cellular Organization

The negative checkpoint signal depends on several proteins, which are recruited to unattached kinetochores, including;