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TLS Online TPP Program

#Question id: 4334

Which of the following is not true of RNA processing?

#Section 3: Genetics, Cellular and Molecular Biology

  1. Exons are cut out before mRNA leaves the nucleus.

  2. Nucleotides may be added at both ends of the RNA.

  3. Ribozymes may function in RNA splicing.

  4. RNA splicing can be catalyzed by spliceosomes.

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TLS Online TPP Program

#Question id: 4304

#Section 3: Genetics, Cellular and Molecular Biology

Using codon table, identify a 5′ → 3′ sequence of nucleotides in the DNA template strand for an mRNA coding for the polypeptide sequence Phe-Pro-Lys.
TLS Online TPP Program

#Question id: 3920

#Section 3: Genetics, Cellular and Molecular Biology

The genes that encode proteins are transcribed by RNA polymerase __.
TLS Online TPP Program

#Question id: 1438

#Section 3: Genetics, Cellular and Molecular Biology

The first line of defense against point mutations is:
TLS Online TPP Program

#Question id: 15112

#Section 1: Engineering Mathematics
TLS Online TPP Program

#Question id: 14263

#Section 5: Bioprocess Engineering and Process Biotechnology

The BOD5 value of a waste-water feed stream to an activated-sludge unit is S0 = 300 mg/l, and the effluent is desired to be S = 30 mg/l. The feed flow rate is F = 2× 10^7 l/day. For the recycle ratio of α = 0.5 and a steady-state biomass concentration of X = 5 g/l, Use the following kinetic parameters:

 
calculate Biomass concentration in recycle (Xr).