Practice Questions

TLS Online TPP Program

#Question id: 4949

What probably accounts for the switch to DNA-based genetic systems during the evolution of life on Earth?

#XL - S Microbiology

DNA is chemically more stable and replicates with fewer errors (mutations) than RNA.
Only DNA can replicate during cell division.
RNA is too involved with translation of proteins and cannot provide multiple functions.
DNA forms the rod-shaped chromosomes necessary for cell division.

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TLS Online TPP Program

#Question id: 5269

#XL - S Microbiology

The material responsible for transformation was shown to be DNA by

TLS Online TPP Program

#Question id: 19610

#XL - P Chemistry

Which of the following molecules have trigonal planar geometry?

TLS Online TPP Program

#Question id: 3925

#XL - Q Biochemistry

Constitutive genes

TLS Online TPP Program

#Question id: 1717

#XL - Q Biochemistry

Which of the following functions are macrophages unable to carry out?

TLS Online TPP Program

#Question id: 4724

#XL - R Botany

Which of the following are true about crossing over ?