TLS Online TPP Program

#Question id: 123


Which would you expect for the fatty acyl chains of the membrane phospholipids of bacteria grown at low temperature?

#Section 2: General Biology
  1. Proportion of unsaturated fatty acyl groups increases.

  2. Proportion of unsaturated fatty acyl groups decreases.

  3. No change in the proportion of saturated versus unsaturated acyl groups.

  4. More cholesterol is produced and is inserted between the fatty acyl chains of the membrane.

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TLS Online TPP Program

#Question id: 14200

#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 qS = 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 ethanol concentration in the effluent (g/l . h) if YP/S = 0.48 g ethanol/g glucose

TLS Online TPP Program

#Question id: 13156

#Section 3: Genetics, Cellular and Molecular Biology

Tay sach;s disease are caused when which enzyme is mutated or non-functional?

TLS Online TPP Program

#Question id: 1961

#Section 2: General Biology

Which action below is affected by an antihistamine?

TLS Online TPP Program

#Question id: 14982

#Section 6: Plant, Animal and Microbial Biotechnology

A very important function of the Golgi apparatus and endoplasmic reticulum is the synthesis of another organelle, the lysosome. This organelle is found in a variety of organisms such as—
1.Protozoa 
2. Some algae
3. Fungi
4. Plants 
5. Animals
In which of the above organisms lysosome is not found.

TLS Online TPP Program

#Question id: 1193

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following is cleaved by regulated intramembrane proteolysis (RIP)?