TLS Online TPP Program

#Question id: 1468


Why are BRCA1 and BRCA2 considered to be tumor-suppressor genes?

#Unit 4. Cell Communication and Cell Signaling
  1. Their normal products participate in repair of DNA damage.

  2. The mutant forms of either one of these prevent breast cancer.

  3. The normal genes make estrogen receptors.

  4. They block penetration of breast cells by chemical carcinogens.

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TLS Online TPP Program

#Question id: 27417

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correct composition of mammalian or   eukaryotic plasma membrane  
Note = OML = outer mono layer, IML = inner mono layer

TLS Online TPP Program

#Question id: 10275

#Unit 6. System Physiology – Plant

In the initial phase of glycolysis, each hexose unit is phosphorylated twice and then split, producing two molecules of triose phosphate, in these reactions included irreversible reaction. How much irreversible reaction is performed in the glycolytic pathway through in this series of reactions?

TLS Online TPP Program

#Question id: 3741

#Unit 3. Fundamental Processes

In photoreactivation, DNA damage caused by UV light is reversed by DNA photolyase which

TLS Online TPP Program

#Question id: 16487

#Unit 12. Applied Biology

Few limitations regarding organ culture 
It can be maintained only for a few months
Not suitable for biochemical and molecular analyses
For each study, fresh organ cultures have to be initiated
It denatures very easily
Which of the above statements are correct? 

TLS Online TPP Program

#Question id: 34186

#Unit 3. Fundamental Processes

A. Each Okazaki fragment is synthesized by a new alternating core polymerase.
B. When synthesis of one Okazaki fragment is completed, synthesis of the next Okazaki fragment starts close to fork
C. Each Okazaki fragment is synthesized by a new primer reaction
D. Bonafide Okazaki fragments size is conserved among prokaryotes to eukaryotes

Choose true and false