Practice Questions

TLS Online TPP Program

#Question id: 67

When a region of DNA must be repaired by removing and replacing some of the nucleotides, what ensures that the new nucleotides are in the correct sequence?

#SCPH05 I Biotechnology

DNA cannot be repaired and this explains why mutations occur.
The new nucleotides base pair accurately with those on the complementary strand.
The repair enzyme recognizes the removed nucleotide and brings in an identical one to replace it.
The three-dimensional structure determines the order of nucleotides.

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TLS Online TPP Program

#Question id: 18386

#SCPH06 I Botany

Biomagnification occurs mainly because of the following reasons

I. compounds are taken up from the environment and accumulated in the lipid deposits of body

II. organisms are consumed by other organisms in a non- sequential manner constituting the food chain

Which of the above statements are incorrect?

TLS Online TPP Program

#Question id: 2304

#SCPH01 Biochemistry

Which of the following is generally absent from animal cells?

TLS Online TPP Program

#Question id: 10883

#SCPH28 | Zoology

Ecosystem having a three trophic level in which number of species is given in table

Total 50 number of link among these trophic levels present. What is value of connectance in ecosystem?

TLS Online TPP Program

#Question id: 14279

#SCPH05 I Biotechnology

Growth yield of mDicrobes is defined as

TLS Online TPP Program

#Question id: 75

#SCPH05 I Biotechnology

The experimental approach taken in current biological investigations presumes that ________.