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TLS Online TPP Program

#Question id: 3853

In E. coli, promoter sequences are located at which of the following position(s) on the template strand?

#Section 3: Genetics, Cellular and Molecular Biology

  1. 0 

  2. –10

  3. –35 

  4. both –10 and –35

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TLS Online TPP Program

#Question id: 21732

#Section 5: Bioprocess Engineering and Process Biotechnology

Rate constants for the first-order decomposition of acetonedicarboxylic acid
CO(CH2COOH)2(aq) → CO(CH3)2(aq) + 2 CO2(g)
are k = 4.75 ×10–4 s–1 at 293 K and k = 1.63 ×10–3 at 303 K. What is the activation energy, Ea, for this reaction?
TLS Online TPP Program

#Question id: 9285

#Section 2: General Biology

Non-O2-evolving (anoxygenic) organisms, contain only a single photosystem such as
TLS Online TPP Program

#Question id: 3732

#Section 3: Genetics, Cellular and Molecular Biology

Which proteins are responsible for the unwinding of the double-stranded DNA during replication?
TLS Online TPP Program

#Question id: 19963

#Section 5: Bioprocess Engineering and Process Biotechnology

Growth yield coefficient is defined as: 
TLS Online TPP Program

#Question id: 3858

#Section 3: Genetics, Cellular and Molecular Biology

The 5' methyl guanosine caps added during RNA chain elongation performs what function?

1. prevents degradation by nucleases 

2. are recognized by protein factors

3. are used to identify the type of RNA