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TLS Online TPP Program

#Question id: 3868

The sigma factor of E. coli RNA polymerase: 

#Molecular Biology

  1. associates with the promoter before binding core enzyme.

  2. combines with the core enzyme to confer specific binding to a promoter.

  3. is inseparable from the core enzyme.

  4. is required for termination of an RNA chain.

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TLS Online TPP Program

#Question id: 4124

#Molecular Biology

Assuming that the average amino acid residue contributes 110 to the peptide molecular weight, what will be the minimum length of the mRNA encoding a protein of molecular weight 50,000?
TLS Online TPP Program

#Question id: 4125

#Molecular Biology

Which of the following are features of the wobble hypothesis?
TLS Online TPP Program

#Question id: 4126

#Molecular Biology

Which one of the following is true about the genetic code?
TLS Online TPP Program

#Question id: 4127

#Molecular Biology

Which one of the following statements about ribosomes is true?
TLS Online TPP Program

#Question id: 4128

#Molecular Biology

Which of the following statements about tRNA molecules is false?
TLS Online TPP Program

#Question id: 4129

#Molecular Biology

Which of the following statements about the tRNA that normally accepts phenylalanine is false?  (mRNA codons for phenylalanine are UUU and UUC.)