TLS Online TPP Program

#Question id: 5251


What do transduction, transformation, and conjugation have in common?

#Unit 8. Inheritance Biology
  1. All require presence of an outside factor to facilitate gene transfer.

  2. In all three processes, DNA is transferred as a single stranded molecule.

  3. They all transfer large pieces of DNA into recipient cells.

  4. none of the above.

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TLS Online TPP Program

#Question id: 5425

#Unit 8. Inheritance Biology

Two varieties of maize averaging 50 and 20 inches in height, respectively, are crossed. The F1 progeny is quite uniform averaging 35 inches in height. Out Of the 16 F2 plants, the 5 are 35 inches. What is the probable number of independent segregating polygenes involved in this trait?

TLS Online TPP Program

#Question id: 3615

#Unit 8. Inheritance Biology

What are alleles?

TLS Online TPP Program

#Question id: 10346

#Unit 6. System Physiology – Plant

Nitrite reductase will convert nitrite to ammonium. There are two types of nitrite reductase characteristics given below;

a) Both nitrite reductase consist of a single 63kD polypeptide

b) In leaf chloroplasts and root plastids contain different forms of the nitrite reductase enzyme

c) In shoot nitrite reductase directly dependent on the light reaction by the ferredoxin, it activates nitrite reductase in choloroplast

d) NADPH in the roots is provided by pentose phosphate pathway, it also activate nitrite reductase in the plastids

Which of the correct statement about nitrite reductase characteristics?

TLS Online TPP Program

#Question id: 24159

#General Aptitude

There are no effective boundaries when it comes to pollutants. Studies have shown that toxic insecticides that have been banned in many countries are riding the wind from countries where they remain legal. Compounds such as DDT and toxaphene have been found in remote places like the Yukon and other Arctic regions.

This paragraph best supports the statement that

TLS Online TPP Program

#Question id: 4583

#Unit 11. Evolution and Behavior

Prior to the work of Lyell and Darwin, the prevailing belief was that Earth is ________.