TLS Online TPP Program
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TLS Online TPP Program
#Question id: 27644
#Unit 1. Molecules and their Interaction Relevant to Biology
Which of the following is incorrect regarding the Type II β turns
TLS Online TPP Program
#Question id: 12730
#Unit 13. Methods in Biology
A single strand of ____ ribonucleotides forms four double stranded stem regions by pairing the bases.
TLS Online TPP Program
#Question id: 2723
#Unit 2. Cellular Organization
With respect to the solenoid model of nucleosome, which of the following is true?
TLS Online TPP Program
#Question id: 2117
#Unit 2. Cellular Organization
Which of the following statements correctly describes osmosis?
TLS Online TPP Program
#Question id: 15618
#Unit 13. Methods in Biology
Wild type E. coli metabolizes the sugar lactose by expressing the enzyme ß-galactosidase. You have isolated a mutant that you call lac1-, which cannot synthesize ß-galactosidase and cannot grow on lactose (Lac-). During an condition isolate a second Lac– mutation, which you designate lac2-. Using P1 phage on this strain and use the resulting phage lysate to infect the lac2- strain, selecting for Kanr transductants. In this case, all 100 Kanr transductants that are examined are Lac–. What does this result tell you about the relationship between the lac1- and lac2- mutations?