TLS Online TPP Program
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TLS Online TPP Program
#Question id: 4075
#Unit 3. Fundamental Processes
Pre-mRNA molecules
a. exist as free RNA molecules in eukaryotic cells.
b. are associated with an abundant set of nuclear proteins.
c. are mostly located in the cytoplasm.
d. are located in the nucleus.
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?
TLS Online TPP Program
#Question id: 16311
#Unit 7. System Physiology – Animal
What is stress?
TLS Online TPP Program
#Question id: 28442
#Unit 5. Developmental Biology
Vulva is derived from ectodermal cells originating from which of the following blastomere cells?
TLS Online TPP Program
#Question id: 28515
#Unit 5. Developmental Biology
Which of the following is correct prediction, If an extra AER is grafted onto an existing limb bud?