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TLS Online TPP Program

#Question id: 3675

Which describes the role of primase during replication?

#3. Fundamental Processes

  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: 4977

#11. Evolution and Behavior

There are at least a dozen known species in the extinct genus Lystrosaurus. If each species was suited to a quite different environment, then this relatively large number of species is likely due to
TLS Online TPP Program

#Question id: 4978

#11. Evolution and Behavior

The dicynodonts survived the mass extinction that was most closely correlated in time, if not in cause, with
TLS Online TPP Program

#Question id: 5012

#11. Evolution and Behavior

A

Silurian

I

Seed plants appear

B

Devonian

II

Gymnosperms dominant

C

Carboniferous

III

Invasion of land by primitive land plants

D

Jurassic

IV

first reptiles
TLS Online TPP Program

#Question id: 5014

#11. Evolution and Behavior

 Following geological time period and major evolutionary event?

I. Devonian                            A. Gymnosperms dominant

II. Jurassic                               B. Amphibians diversify; first reptiles

III. Carboniferous                  C. Mammals appear

IV. Triassic                           D. Seed plants appear
TLS Online TPP Program

#Question id: 5015

#11. Evolution and Behavior

 During which of the following largest mass extinction recorded in the history of life on Earth.
TLS Online TPP Program

#Question id: 5017

#11. Evolution and Behavior

Arrange these events from earliest to most recent.

1.  emission of lava in what is now Siberia at time of Permian extinctions

2.  emission of lava that solidified at the same time as iron-bearing terrestrial rocks began to rust

3.  emission of lava that solidified at the same time as rusted iron precipitated from seawater

4.  emission of lava in what is now India at time of Cretaceous extinctions