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TLS Online TPP Program

#Question id: 354

You have a freshly prepared 0.1 M sucrose (molecular mass 342) solution, which means ________.

#Section 4: Fundamentals of Biological Engineering

  1. 6.02 × 10^23 of sucrose molecules are present in the solution

  2. 6.02 × 10^22 of sucrose molecules are present in the solution

  3. 34.2 g of sucrose is present in the solution

  4. 6.02 × 10^22 of sucrose molecules or 34.2 g of sucrose is present in the solution

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TLS Online TPP Program

#Question id: 1655

#Section 2: General Biology

IgA in seromucus secretions:
TLS Online TPP Program

#Question id: 13059

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

Precision will be reduced, but yield will be increased
Optimisation of a PCR reaction is often a compromise between the competing demands for precision, efficiency and yield. Although the specific effects may vary, generally, increasing the annealing temperature will increase non-specific primer binding and reduce precision. Increasing the length of the elongation phase will reduce the proportion of incomplete newly-synthesised strands and therefore increase yield. In this case, the potential effect on efficiency is unclear. Increasing the elongation phase would increase the reaction time, but the time taken to ramp down to a lower annealing temperature would be reduced.
Efficiency during ligation of blunt ended insert and vector cannot be cannot be enhanced by means of…..
TLS Online TPP Program

#Question id: 2085

#Section 3: Genetics, Cellular and Molecular Biology

Cholesterol mixes with phospholipids in a biomembrane because cholesterol molecules are
TLS Online TPP Program

#Question id: 11806

#Section 6: Plant, Animal and Microbial Biotechnology

sap is translocated from areas of supply, called sources, to areas of metabolism or storage, called sinks. Which of the following statements about source and sink are TRUE?

a.) Sinks include any nonphotosynthetic organs of the plant and organs that do not produce enough photosynthetic products to support their own growth or storage needs

b.) Sources include exporting organs that are capable of producing photosynthate in excess of their own needs

c.) During the growing season of the first year, storage root is a sink, when it accumulates sugars received from the source leaves. During the second growing season the same root becomes a source

d.) Roots, tubers, developing fruits, and immature leaves, which must import carbohydrate for normal development, are all examples of sources tissues

Find the correct combination of the source and sink pattern of translocation.
TLS Online TPP Program

#Question id: 3779

#Section 3: Genetics, Cellular and Molecular Biology

In a healthy eukaryotic cell, the rate of DNA repair is typically equal to the rate of DNA mutation. When the rate of repair lags behind the rate of mutation, what is a possible fate of the cell?