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TLS Online TPP Program

#Question id: 7254

Following statements regarding to the micromeres specification and regulatory input  in sea urchin embryo. Which of the following statement is correct?

#Unit 5. Developmental Biology
  1. OTX is a general transcription factor, and β-catenin from the maternal cytoplasm is concentrated at the vegetal pole of the egg. These transcriptional regulators are inherited by the macromeres and activate the Pmar1 gene.
  2. Pmar1 encodes a repressor of HesC, which in turn encodes activator of several genes involved in micromere specification.
  3. In the veg2 cells, Pmar1 is not activated and the HesC gene product shuts down the non-skeletogenic genes.
  4. As soon as the micromeres form, maternal β-catenin and Otx activate the Blimp1 gene, whose product activates the Wnt8 gene. Wnt8 protein is then received by the same micromeres that made it (i.e., autocrine regulation), activating the micromeres’ own genes for β-catenin.
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TLS Online TPP Program

#Question id: 12825

#General Aptitude

The length and breadth of a rectangular field are in the ratio 7 :4. A path 4 m wide running all around outside has an area of 416 m2 . The breadth (in m) of the field is
TLS Online TPP Program

#Question id: 2868

#Unit 2. Cellular Organization

Given the following mutants and conditions, predict the expression of the of the lacZ gene (no expression, basal level of expression, or activated level of expression). A mutant of E. coli that has a mutation in the operator of the lac operon that prevents the repressor from binding

Glucose

Lactose

Expression

+

-

1

+

+

2

-

-

3

-

+

4


TLS Online TPP Program

#Question id: 6989

#Unit 5. Developmental Biology

Adult human bone:
TLS Online TPP Program

#Question id: 4257

#Unit 3. Fundamental Processes

An original section of DNA has the base sequence AGCGTTACCGT. A mutation in this DNA strand results in the base sequence AGGCGTTACCGT. What type of mutation does this change represent?
TLS Online TPP Program

#Question id: 15231

#Unit 13. Methods in Biology

Which of the following is true for Capillary electrophoresis (CE) resolution