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TLS Online TPP Program

#Question id: 3867

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

#SCPH06 I Botany

  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: 4745

#SCPH12 I Genetics

In some goats, the presence of horns is produced by an autosomal gene that is dominant in males and recessive in females. A horned female is crossed with a hornless male. The F1 offspring are intercrossed to produce the F2. What proportion of the F2 offspring will have horns?
TLS Online TPP Program

#Question id: 8291

#I Life Science/ Life Sciences Group – I-V

Which of the following pairs are the best examples of homologous structures?
TLS Online TPP Program

#Question id: 5025

#SCPH28 | Zoology

Which of these genetic processes may be most helpful in accounting for the Cambrian explosion?
TLS Online TPP Program

#Question id: 18598

#SCPH28 | Zoology

First forest plants appeared in which geological period time scale?
TLS Online TPP Program

#Question id: 87

#SCPH28 | Zoology

The compounds α-D-fructofuranose and β-D-fructofuranose are ________.