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TLS Online TPP Program

#Question id: 301

What explains the very high melting and boiling point of water?

#SCPH28 | Zoology

  1. Strong dipole-dipole bonds between water molecules

  2. Strong hydrogen bonds between water molecules

  3. Dispersion forces which are present in all molecules

  4. Asymmetrical shape of the polar bonds.

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TLS Online TPP Program

#Question id: 13046

#SCPH05 I Biotechnology

Aminopetrin inhibits :
TLS Online TPP Program

#Question id: 13083

#SCPH01 Biochemistry

The genomic DNA of an organism is digested with two restriction enzymes; one of the, PstI (CTGCA/G), while the other., MseI (T/TAA). This would generate the following 3 types of DNA fragments: 
(1) both ends cleaved by PstI (Pst-Pst), 
(2) both ends cleaved by MseI (Mse-Mse), and 
(3) one end generated by each of the two enzymes (Pst-Mse). 
the most frequent fragments in decreasing order,
TLS Online TPP Program

#Question id: 9213

#SCPH28 | Zoology

Suppose you attend a town meeting at which some experts tell the audience that they have performed a cost-benefit analysis of a proposed transit system that would probably reduce overall air pollution and fossil fuel consumption. The analysis, however, reveals that ticket prices will not cover the cost of operating the system when fuel, wages, and equipment are taken into account. As a biologist, you know that if ecosystem services had been included in the analysis, the experts might have arrived at a different answer. Why are ecosystem services rarely included in economic analyses?
TLS Online TPP Program

#Question id: 13077

#SCPH05 I Biotechnology

The DNA probes for RFLP may NOT be obtained from
TLS Online TPP Program

#Question id: 16139

#SCPH01 Biochemistry

 Many mouse genes are “tissue-specific,” that is, they are present throughout the body but are expressed in only one of the animal’s many tissue types. (Other mouse genes are expressed throughout the body, or in multiple tissues.) Geneticists can study the regulation of a mouse gene by fusing the gene’s promoter region to the LacZ coding sequence and injecting the construct to create a transgenic mouse. Fusion of the mouse amylase promoter to LacZ yielded a Pamylase-LacZ construct.              
Mice heterozygous for the resulting Pamylase-LacZ  transgene displayed the LacZ expression exclusively in the pancreas. Would you expect homozygotes for the transgene to also display LacZ expression in the pancreas?.