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TLS Online TPP Program

#Question id: 3986

Consider the lac operon of E. coli.  When there is neither glucose nor lactose in the growth medium:

#Unit 3. Fundamental Processes

  1. CRP protein binds to the lac operator.

  2. CRP protein displaces the Lac repressor from the lac promoter.

  3. repressor is bound to the lac operator.

  4. RNA polymerase binds lac promoter and transcribes the lac operon.

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TLS Online TPP Program

#Question id: 24262

#Unit 2. Cellular Organization

Clock position of amino terminal tail of amino acid is fixed, so which of the following is correctly showing the position of H2A
TLS Online TPP Program

#Question id: 31047

#Unit 4. Cell Communication and Cell Signaling

R7 photoreceptors develop normally in the developing eyes of Drosophila mutants that lack a functional Ras or Raf protein but express :
TLS Online TPP Program

#Question id: 2878

#Unit 2. Cellular Organization

Match the following types of Transposable elements with their respective types and examples found in various organisms.

Transposon

Type

Example

1. F and G element

a. DNA-mediated

 i. Drosophila

2. Ty elements

b. RNA-mediated

 ii. Humans

3. Alu sequences

c. Poly-A retrotransposons

 iii. Yeast

4. P-elements

d. Virus-like retrotransposons

 iv. Mammals

TLS Online TPP Program

#Question id: 1465

#Unit 4. Cell Communication and Cell Signaling

Which of the following processes do normal proto-oncogenes typically exhibit?
TLS Online TPP Program

#Question id: 5124

#Unit 5. Developmental Biology

Following statements are being made regarding conditional specification –

A. The process by which cells achieve their respective fates by interacting with other cells.

B. the cell “knows” very early what it is to become without interacting with other cells.

C. The critical factors that control cell fate are present and differentially segregated in the cytoplasm of these cells.

D. a cell becomes is specified by the array of interactions it has with its neighbors, which may include cell-to-cell contacts (juxtacrine factors), secreted signals (paracrine factors).

Which of the above statements are correct?