Practice Questions

TLS Online TPP Program

#Question id: 7258

A four-cell embryo normally develops into a blastocyst consisting of trophectoderm (TE) cells on the outside and inner cell mass (ICM) cells inside. The transplantation experiments were done with mouse embryos.

A. If a labeled cell is placed on the outside of a very early embryo, it is likely to form extraembryonic tissues.

B. If a labeled cell is placed on the inside of a very early embryo, it is likely to form embryonic tissues.

According to above observations which of the following statement is true?

#Unit 5. Developmental Biology

The fate of a cell in the early embryo—TE or ICM—is determined by the cell’s position and shows regulative development.
The fate of a cell in the early embryo—TE or ICM—is determined by the cell’s position and shows mosaic development.
The fate of a cell in the early embryo—TE or ICM—is determined in the position independent manner and shows mosaic development.
The fate of a cell in the early embryo—TE or ICM—is determined in the position independent manner and shows regulative development.

More Questions

TLS Online TPP Program

#Question id: 19723

#Unit 3. Fundamental Processes

Reduction in the telomerase activity after the cell cycle is the notion of

TLS Online TPP Program

#Question id: 19733

#Unit 3. Fundamental Processes

Extensive shortening of telomeres eventually leads to

TLS Online TPP Program

#Question id: 19734

#Unit 3. Fundamental Processes

Some of the statements are given regarding shelterin choose the correct

a) Shelterin is the complex of telomeric protein

b) Shelterin functions to protect telomeres from DNA damage repair pathways

c) In mammals, six telomeric proteins (TRF1, TRF2, Rap1, TIN2, TPP1, and POT1) comprises a complex.

d) Shelterin also regulate telomere length control by telomerase

TLS Online TPP Program

#Question id: 19735

#Unit 3. Fundamental Processes

In mammals, six telomeric proteins (TRF1, TRF2, Rap1, TIN2, TPP1, and POT1) comprises a complex which of the following is incorrect regrarding these telomeric protein

a) TRF1, TRF2, Rap1, binds to double stranded of DNA

b) TIN2 does not binds to DNA at all

c) POT1 binds to the GT tail extended by telomerase

d) TIN2 interacts with the two duplex telomeric DNA-binding proteins TRF1 and TRF2 as well as with TPP1

TLS Online TPP Program

#Question id: 19736

#Unit 3. Fundamental Processes

Which of the following shelterin protein interacts with the two duplex telomeric DNA-binding proteins TRF1 and TRF2 as well as with TPP1

TLS Online TPP Program

#Question id: 19737

#Unit 3. Fundamental Processes

Choose the incorrect statement regarding telomerase