In a sequence database of a given size, which of the following expressions is likely to retrieve more matches (X means any amino acid; any of the residues in square brackets can occupy that position)?

#Question id: 19906

#Section 5: Bioprocess Engineering and Process Biotechnology

#Question id: 3613

#Section 3: Genetics, Cellular and Molecular Biology

When a single gene influences more than one trait it is called

#Question id: 3276

#Section 3: Genetics, Cellular and Molecular Biology

Which of these conditions are always true of populations evolving due to natural selection?

Condition 1: The population must vary in traits that are heritable.

Condition 2: Some heritable traits must increase reproductive success.

Condition 3: Individuals pass on most traits that they acquire during their lifetime.

#Question id: 20012

#Section 5: Bioprocess Engineering and Process Biotechnology

#Question id: 14196

#Section 5: Bioprocess Engineering and Process Biotechnology

A fluidized-bed, immobilized-cell bioreactor is used for the conversion of glucose to ethanol by Z. mobilis cells immobilized in k-carrageenan gel beads. The dimensions of the bed are 10 cm (diameter) by 200 cm. Since the reactor is fed from the bottom of the column and because of CO₂ gas evolution, substrate and cell concentrations decrease with the height of the column. The average cell concentration at the bottom of the column is X₀ = 45 g/l, and the average cell concentration decreases with the column height according to the following equation:

where Z is the column height (cm). The specific rate of substrate consumption is q_S = 2 g S/g cells. h. The feed flow rate and glucose concentration in the feed are 5 l/h and 160 g glucose/l, respectively.

Determine the substrate (glucose) concentration in the effluent