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#Question id: 4313

Which of the following statements best describes the characteristics of siRNA?

#SCPH06 I Botany

  1. a double-stranded RNA, one of whose strands can complement and inactivate a sequence of mRNA

  2. a single-stranded RNA that can, where it has internal complementary base pairs, fold into cloverleaf patterns

  3. a double-stranded RNA that is formed by cleavage of hairpin loops in a larger precursor

  4. a portion of rRNA that allows it to bind to several ribosomal proteins in forming large or small subunits

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TLS Online TPP Program

#Question id: 447

#SCPH06 I Botany

In glycolysis, fructose 1,6-bisphosphate is converted to two products with a standard free-energy change (DG'°) of 23.8 kJ/mol.  Under what conditions encountered in a normal cell will the free-energy change (DG) be negative, enabling the reaction to proceed spontaneously to the right?
TLS Online TPP Program

#Question id: 787

#SCPH06 I Botany

Which of the following statement is INCORRECT with respect to the structure of DNA?
TLS Online TPP Program

#Question id: 5214

#SCPH06 I Botany

What is the most probable explanation for the continued presence of pseudogenes in a genome such as our own?
TLS Online TPP Program

#Question id: 13083

#SCPH06 I Botany

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: 18691

#I Life Science/ Life Sciences Group – I-V

The attractive interactions lead to ______energy.