TLS Online TPP Program

#Question id: 2740


Escherichia coli use antisense regulation to switch the expression of outer membrane proteins. Antisense _____________.

#SCPH05 I Biotechnology
  1. is a DNA molecule complimentary to the mRNA

  2. is a jumping gene

  3. is a RNA molecule that degrades the mRNA

  4.  is an RNA molecule that will bind to the mRNA

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TLS Online TPP Program

#Question id: 10991

#SCPH06 I Botany

When recording lead I on an EKG, the right arm is the negative electrode, and the positive electrode is the

TLS Online TPP Program

#Question id: 798

#SCPH05 I Biotechnology

Match the structural properties of DNA with the respective types of DNA in which they are found.

               COLUMN – I                                             COLUMN – II

A.        Pitch per turn of helix                                     1. 45.6 angstrom                   

                                                                                      2. 24.6 angstrom                               

 3. 33.2 angstrom

B.        Helix packing diameter                                 1. 23.7 angstrom            

                                                                                     2. 18.4 angstrom            

3. 25.5 angstrom

C.        Major-groove proportions                            1. Flattened out on helix surface

                                                                                      2. Extremely narrow but very deep

 3. Wide and of intermediate depth

D.        Minor-groove proportions                            1. Very broad but shallow

                                                                                     2. Extremely narrow but very deep

                                                                                    3. Narrow and of intermediate depth

TLS Online TPP Program

#Question id: 2930

#SCPH01 Biochemistry

The S. cerevisiae homolog of Xenopus MPF is:

TLS Online TPP Program

#Question id: 19611

#SCPH05 I Biotechnology

During change of O2 to O22- ion, the electron adds on which of the following orbitals?

TLS Online TPP Program

#Question id: 5241

#SCPH06 I Botany

Genes a, b, and c are widely spaced in the bacterial genome. Transducing phage from an a+ b+ c+ bacterium were used to infect a culture of a- b- c- cells, and b+ transductants were selected. Which of the following best describes the predicted genotypes of these transductants?