TLS Online TPP Program

#Question id: 3867


RNA polymerase from E. coli (core enzyme alone) has all of the following properties except that it:

#SCPH05 I Biotechnology
  1. can extend an RNA chain and initiate a new chain.

  2. is required for the synthesis of mRNA, rRNA, and tRNA in E. coli.

  3. produces an RNA polymer that begins with a 5'-triphosphate.

  4. recognizes specific start signals in DNA.

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TLS Online TPP Program

#Question id: 4985

#SCPH28 | Zoology

The loss of ventral spines by modern freshwater sticklebacks is due to natural selection operating on the phenotypic affects of Pitx1 gene

TLS Online TPP Program

#Question id: 5012

#SCPH06 I Botany

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: 5012

#SCPH28 | Zoology

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: 5013

#SCPH06 I Botany

Following is correct match

Periods

Age of evolutionary event

A- Jurassic

I- Fish

B- Ordovician

II- Amphibian

C- Devonian

III- Gymnosperm

D-Carbonyferous

IV- Invertebrates

TLS Online TPP Program

#Question id: 5013

#SCPH28 | Zoology

Following is correct match

Periods

Age of evolutionary event

A- Jurassic

I- Fish

B- Ordovician

II- Amphibian

C- Devonian

III- Gymnosperm

D-Carbonyferous

IV- Invertebrates

TLS Online TPP Program

#Question id: 5014

#SCPH06 I Botany

 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