TLS Online TPP Program

#Question id: 1836


What is the feature that best uniquely describes NK cell activity against a virus-infected cell?

#Section 2: General Biology
  1. It is cell contact dependent

  2. Peptides derived from processed viral antigens are recognized

  3. Apoptosis is induced in the target cell by the perforin–granzyme pathway

  4. An absence of MHC class I on the target cell is detected

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TLS Online TPP Program

#Question id: 27313

#Section 3: Genetics, Cellular and Molecular Biology

Which type of interactions promote and stabilize the tetraloop structure.

TLS Online TPP Program

#Question id: 27314

#Section 3: Genetics, Cellular and Molecular Biology

A feature of RNA that adds to its propensity to form double-helical structures is additional non-Watson–Crick base pairs. One such example is the G:U base pair, which has

TLS Online TPP Program

#Question id: 27315

#Section 5: Bioprocess Engineering and Process Biotechnology

In an exponentially growing batch culture of Saccharomyces cerevisiae, the cell density is 30 𝑔𝐿−1(𝐷𝐶W), the specific growth rate (𝜇) is 0. 4ℎ−1 and substate uptake rate (rs) is 18𝑔𝐿−1ℎ−1. The cell yield coefficient 𝑌𝗑/𝑠 will be

TLS Online TPP Program

#Question id: 27316

#Section 5: Bioprocess Engineering and Process Biotechnology

If the rate of product formation is approximately proportional to the rate of cell growth, then this pattern of product formation is referred to as:

TLS Online TPP Program

#Question id: 27317

#Section 5: Bioprocess Engineering and Process Biotechnology

In microbial cultivation, the expression for product synthesis rp = αµX + βX denotes

TLS Online TPP Program

#Question id: 27318

#Section 5: Bioprocess Engineering and Process Biotechnology

The specific productivity (qp) of an enzyme production is fitted linearly with specific growth rate (μ) of a fungal organism according to the equation qp = α.μ + β. The estimated values of constants α and β are 0.0006 and 25 respectively. The enzyme production kinetics is