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TLS Online TPP Program

#Question id: 7154

Cancer is believed to often arise from stem cells, rather than fully differentiated cells. Which of the following are consistent with this view?

#Part-B Specialized Branches in Biotechnology
  1. Stem cells are actively dividing and express few differentiated functions, so they may have fewer changes to undergo than do fully differentiated cells in becoming cancer cells.
  2. DNA replication is necessary for mutations to occur, and stem cells are replicating their DNA whereas differentiated cells are for the most part not replicating their DNA.
  3. Teratocarcinomas are tumors that arise from germ cells or embryonic stem (ES) cells, under certain circumstances, demonstrating that tumors can arise from stem cells without further mutation.
  4. All of the above are reasons that cancer cells may more readily arise from stem cells than from fully differentiated cells.
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TLS Online TPP Program

#Question id: 10340

#Part-B Specialized Branches in Biotechnology

There several charecteristics of nitrate reductase, which of the following properties of nitrate reductase is incorrect?
TLS Online TPP Program

#Question id: 10341

#Part-B Specialized Branches in Biotechnology

The accumulation of nitrate that results from diminished nitrate reductase activity, this symptoms is caused by
TLS Online TPP Program

#Question id: 10344

#Part-B Specialized Branches in Biotechnology

Some of the following caracteristics of Nitrite reductase, which one of the is incorrect?
TLS Online TPP Program

#Question id: 10345

#Part-B Specialized Branches in Biotechnology

In Leaf Chloroplasts and root plastids contain different forms of the enzyme, nitrite reductase such as

a) Roots contain fd-dependent nitrite reductase

b) Shoots contain NADPH dependent nitrite reductase

c) Shoots contain fd-dependent nitrite reductase

d) Roots contain NADPH dependent nitrite reductase

Which one of the following is correct combination?
TLS Online TPP Program

#Question id: 10350

#Part-B Specialized Branches in Biotechnology

Ammonium can be assimilated via an alternative pathway rather than primary pathway which involves the sequential actions of glutamine synthetase(GS) and glutamate synthase(GOGAT), these alternative pathway catalyzes by enzyme known as,
TLS Online TPP Program

#Question id: 10352

#Part-B Specialized Branches in Biotechnology

which of the following amino acid that participates in the malate–aspartate shuttle to transfer reducing equivalents from the mitochondrion and chloroplast into the cytosol?