Practice Questions

TLS Online TPP Program

#Question id: 787

Which of the following statement is INCORRECT with respect to the structure of DNA?

#Unit 1. Molecules and their Interaction Relevant to Biology

Six adenosines in a row in a DNA helix produce a bend of about 18 degrees.
DNA was first isolated and characterized by Friedrich Miescher who called the phosphorus-containing substance “nuclein.”
It is the pentoses that define the identity of a nucleic acid not the nitrogenous bases.
The Z-DNA tracts do not play any role in regulating the expression of some genes or in genetic recombination.

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TLS Online TPP Program

#Question id: 20969

#Unit 12. Applied Biology

Which of the following is the process of choosing parent organisms for the characteristics that is wanted in their offspring?

TLS Online TPP Program

#Question id: 20970

#Unit 12. Applied Biology

Which protein has been produced generating a transgenic sheep that is used for replacement therapy for individuals at risk from emphysema?

TLS Online TPP Program

#Question id: 20971

#Unit 12. Applied Biology

Which of the following gene have been introduced into the transgenic fish?

a) E.coli gene for β-galatosidase

b) Human or rat gene for growth hormone

c) Chicken gene for delta crystalline protein

TLS Online TPP Program

#Question id: 20972

#Unit 12. Applied Biology

Which of the following is not a characteristic of the immobilized enzymes?

TLS Online TPP Program

#Question id: 20973

#Unit 12. Applied Biology

Which of the following is the physico-chemical component?

TLS Online TPP Program

#Question id: 20974

#Unit 12. Applied Biology

An example of biosensor, urea electrode makes use of which of the following electrodes?