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TLS Online TPP Program

#Question id: 3675

Which describes the role of primase during replication?

#SCPH28 | Zoology

  1. It catalyzes the formation of phosphodiester bonds using NTPs as substrates.

  2. It coordinates synthesis of the leading strand and the lagging strand.

  3. It functions as a holoenzyme that polymerizes in the 3’→ 5’direction.

  4. It uses an exonuclease activity to remove incorrect nucleotides.

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TLS Online TPP Program

#Question id: 3526

#SCPH06 I Botany

In garden peas, the allele for tall plants (D) is completely dominant to the allele for dwarf plants (d) and the allele for violet flower color (W) is completely dominant to the allele for white flower color (w). In a cross between a tall violet plant, with the genotype DDWw, and a dwarf white plant, what phenotypic ratio of the progeny would be expected from this cross?
TLS Online TPP Program

#Question id: 19464

#SCPH01 Biochemistry

Which is the common fixative agent that crosslinks amino groups on adjacent molecules
TLS Online TPP Program

#Question id: 3654

#SCPH01 Biochemistry

Cleavage of the cyclobutane ring of pyrimidine dimers by ______________ restores the original DNA structure.
TLS Online TPP Program

#Question id: 2347

#SCPH28 | Zoology

Diffusion of molecules across biological membranes that requires channels is called
TLS Online TPP Program

#Question id: 8935

#SCPH28 | Zoology

What may have occurred to prevent species that are of the same grade from also belonging to the same clade?