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TLS Online TPP Program

#Question id: 7705

 Based on this tree, which statement is correct?


#Unit 9. Diversity of Life Forms
  1. The human lineage is a basal taxon.
  2. Salamanders are a sister group to the group containing lizards, goats, and humans.
  3. Salamanders are as closely related to lizards as to humans
  4. Goats are more closely related to salamanders than to humans.
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TLS Online TPP Program

#Question id: 26478

#Unit 2. Cellular Organization

How many operators in Lac operon system
TLS Online TPP Program

#Question id: 26479

#Unit 2. Cellular Organization

 Mutations in the three lac operators shows different values of fold repression  in which of the following situation will get most  effective repression
TLS Online TPP Program

#Question id: 26480

#Unit 2. Cellular Organization

Optimal length of prokaryotic promoter should be
TLS Online TPP Program

#Question id: 26481

#Unit 2. Cellular Organization

Which of the following are the characteristics of prokaryotic operator O1
a. Made up of 21-bp sequence 
b. It has twofold/dyad symmetry 
c. Recognized by two subunits of Lac repressor
d. On each O1 four unit of Lac repressor binds
TLS Online TPP Program

#Question id: 26482

#Unit 2. Cellular Organization

Which of the following is incorrectly matched if in the medium

a. glucose + lactose

= basal level of transcription

b. glucose + lactose

= no transcription

c. glucose  lactose+

= activated level of transcription

d. glucose + lactose +

= basal level of transcription






TLS Online TPP Program

#Question id: 26483

#Unit 2. Cellular Organization

lac repressor binds to