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TLS Online TPP Program

#Question id: 1092

Which of the following statements is true of steroid receptors?

#Section 3: Genetics, Cellular and Molecular Biology

  1. The receptor molecules are themselves lipids or glycolipids.

  2. The receptor may be inside the nucleus of a target cell.

  3. The unbound steroid receptors are quickly recycled by lysosomes.

  4. Steroid receptors are typically bound to the external surface of the nuclear membrane.

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TLS Online TPP Program

#Question id: 13071

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Modifications of the agglutination reaction involve the use of ________particles, which allow the reaction to be observed more easily in the liquid phase
TLS Online TPP Program

#Question id: 14584

#Section 2: General Biology

A medium that inhibits the growth of organisms other than the one being sought is termed a(n)
TLS Online TPP Program

#Question id: 8927

#Section 6: Plant, Animal and Microbial Biotechnology

Arthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that
TLS Online TPP Program

#Question id: 14274

#Section 5: Bioprocess Engineering and Process Biotechnology

Nicotiana tabacum cells are cultured to high density for production of polysaccharide gum. The reactor used is a stirred tank, containing initially 100 litres medium. The maximum specific growth rate of the culture is 0.18 d-1 and the yield of biomass from substrate is 0.5 g g-l. The concentration of growth-limiting substrate in the medium is 3% (w/v). The reactor is inoculated with 1.5 g l- 1 cells and operated in batch until the substrate is virtually exhausted; medium flow is then started at a rate of 4 l d-1. Fed-batch operation occurs under quasi-steady-state conditions. Estimate final biomass concentration?

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TLS Online TPP Program

#Question id: 586

#Section 2: General Biology

At the beginning of an enzyme-catalyzed reaction the ________ is negligible.