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TLS Online TPP Program

#Question id: 5042

Which one of the following set of Yamanaka factors can be used to regained the pluripotency of somatic cells in mammals?

#Unit 5. Developmental Biology

  1. Sox2, oct4, c-myc and klf-4

  2. Nanog, sox2, c-fos, smad4

  3. Oct3/4, sox2, c-fos and c-jun

  4. Nanog, TGFb, c-myc and klf4

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TLS Online TPP Program

#Question id: 23251

#Unit 13. Methods in Biology

Which enzyme degrades the resulting component dNTPs and ATP if not incorporated in chain.
TLS Online TPP Program

#Question id: 12996

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is incorrect regarding to α-helix
a) In the α helix, the first four NH groups and last four CO groups will normally lack backbone  hydrogen bonds.
b) the length of an amino acid in α-helix reduced almost 3 times than linear structure.
c) the frequent occurrence of Pro and Gly residues favour α-helix formation.
d) dihedral (ϕ and ψ) angle should be close to -57 and -47.
TLS Online TPP Program

#Question id: 951

#Unit 1. Molecules and their Interaction Relevant to Biology

The changes that occur in cells that lead to its death are called ________.
TLS Online TPP Program

#Question id: 746

#Unit 1. Molecules and their Interaction Relevant to Biology

Two separate chains of DNA are wound around each other, each following a helical (coiling) path, resulting in:
TLS Online TPP Program

#Question id: 4883

#Unit 8. Inheritance Biology

Heterozygous female selected mate to a homozygous male fruit fly with yellow body color and curved wings, four types of offspring will occur

Black body, flat wings 12.5 %

Black body, curve wing 37.5 %

Yellow body, curve wing 12.5 %

Yellow body, flat wings 37.5 %

Which of the following conclusion drawn about nature of inheritance?

A) Black body, curve wing are dominant over yellow body and flat wings.

B) F2 phenotype will not show ratio of 9:3:3:1when inter cross F1 heterozygous

C) Gene for body color and wing shape is incompletely link

D) F1 hybrid genotype having cis configuration of allele