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TLS Online TPP Program
#Question id: 12323
#Unit 10. Ecological Principles
Which of the following is considered by ecologists a measure of the ability of a community either to resist change or to recover to its original state after change?
TLS Online TPP Program
#Question id: 15622
#Unit 13. Methods in Biology
9 In your study of a new bacterial species you have identified a transducing phage that you call Px. In addition you have worked out methods to make random transposon insertions into the bacterial genome. You have generated two different transposon insertion collections one with 105 random Tn5 (Kanr) insertions and the other with 105 random Tn10 (Tetr) insertions. You grow Px phage on the mixed collection of Tn5 insertions and use the resulting phage lysate to infect the mixed collection of Tn10 insertions. You select 10,000 Kanr transductants and find that 80 of them are Tets. Use this information to estimate the total size of the bacterial genome assuming that both Tn5 and Tn10 insert randomly and that the average size of a fragment recombined into the recipient genome during Px transduction is 55 kbp. (Tn5 is about 5 kbp and Tn10 is 10 kbp.)
TLS Online TPP Program
#Question id: 11293
#Unit 10. Ecological Principles
Measurement of phytoplankton production, take sample of phytoplankton suspended in two bottles in lake. One bottle (D) is dark in colour but second bottle (L) light in colour. After some time productivity measure as follow Where Lo –oxygen concentration in light bottle, Do –oxygen concentration in Dark bottle, Io –oxygen concentration in bottle before incubation
A) Lo- Do B) Lo- Io C) Io- Do
TLS Online TPP Program
#Question id: 19367
#Unit 12. Applied Biology
First phase genetic engineering is done for production of
1. Human growth hormone
2. Insulin
3. Interferon
Which of the above products are correct?
TLS Online TPP Program
#Question id: 3965
#Unit 3. Fundamental Processes
Eukaryotes regulate gene expression at all of the following levels except: