Which of the following statement(s) is (are) true of transmembrane proteins?

a. All contain a hydrophobic α helix.

b. Some serve as membrane attachment sites for peripheral membrane proteins.

c. Some contain more than one membrane-spanning domain.

d. All are asymmetrically oriented in the lipid bilayer.

TLS Online TPP Program

#Question id: 23080

#Unit 13. Advances in Biotechnology

During the growth of animal cells in culture, it is noticed that the cells do not look very healthy. After an investigation, this is found that there is a lot of lactic acid in the culture fluid. What is probably wrong with this culture?

TLS Online TPP Program

#Question id: 23081

#Unit 13. Advances in Biotechnology

pH of culture medium is initially controlled by

TLS Online TPP Program

#Question id: 23082

#Unit 13. Advances in Biotechnology

The technique of organ culture may be divided on the basis of employing

a) solid medium

b) liquid medium

c) semi-solid medium

TLS Online TPP Program

#Question id: 23083

#Unit 13. Advances in Biotechnology

Sometimes cell lines can be cultured for such a long time that they apparently develop the potential to be subcultured indefinitely in vitro. Such cells lines are called

TLS Online TPP Program

#Question id: 23084

#Unit 13. Advances in Biotechnology

Which of the following is the technique used for the embryo culture?

TLS Online TPP Program

#Question id: 23085

#Unit 13. Advances in Biotechnology

The major problem associated with the isolation of free cells and cell aggregates from organs is that of