If the culture is kept in stationary phase for a prolonged period, the cells may die. Why?

a) due to the time taken for doubling of cell number

b) duration of a cell generation is too large, depending mainly on the plant species.

c) stationary phase is forced on the culture by a depletion of the nutrients

d) due to an accumulation of cellular wastes

TLS Online TPP Program

#Question id: 12732

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

When the absorbance of DNA at ____ nm increases as the DNA becomes denatured , the phenomenon known as the ______.

TLS Online TPP Program

#Question id: 12733

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

It provides a key marker of potential disease development and reaction to individual treatment.

TLS Online TPP Program

#Question id: 12734

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Name the US-based company which is able to provide personal genetic information based on analysis of disease genes such as diabetes and others.

TLS Online TPP Program

#Question id: 12735

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Match the following:

A. Maize	i. Modified seed storage protein
B. Tomato	ii. Modified ripening
C. Canola	iii. Resistance to insects
D. Soya Bean	iv. Seed oil modification

TLS Online TPP Program

#Question id: 12736

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Match the following:

1. Emphysema                                                    i.  Fibroblasts

2. Immune System Disorder                        ii.  HPRT cLesch-Nyhan syndrome                           iv. T and B cells

TLS Online TPP Program

#Question id: 12737

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

 Name the technique which is used to detect abnormalities at an early stage.