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TLS Online TPP Program

#Question id: 2702

Which, if any, of the following statements is false?

#SCPH05 I Biotechnology

  1. Unlike DNA, RNAs are unmethylated, and only the four standard bases – A, C, G and U are found in RNAs.

  2. The primary structure of an RNA is the linear sequence of nucleotides.

  3. The secondary structure of an RNA is dominated by hydrogen bonding between bases on the same strand.

  4. Stem-loop structures are common in RNA and consist of complementary sequences that form stable base pairs, separated by a short sequence of unpaired bases.

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TLS Online TPP Program

#Question id: 5264

#SCPH05 I Biotechnology

Studies done by Buchner showed that ground-up yeast cells were able to convert sugar to alcohol. The components of the mixture that were responsible for this transformation were
TLS Online TPP Program

#Question id: 15872

#SCPH05 I Biotechnology

For optimum callus growth, the given some following vitamins are required, except;
TLS Online TPP Program

#Question id: 5089

#SCPH01 Biochemistry

The archenteron of the developing sea urchin eventually develops into the ________.
TLS Online TPP Program

#Question id: 12928

#SCPH06 I Botany

Name the enzyme which is used to stabilize bases.
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?.