TLS Online TPP Program

#Question id: 708


 Rotational symmetry in proteins is false?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. It involves rotation of proteins inside the cell.

  2. It is frequently seen in the subunits of oligomeric proteins.

  3. It is frequently seen in viruses.

  4. It may involve rotation about one or more axes.

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TLS Online TPP Program

#Question id: 16953

#Unit 4. Cell Communication and Cell Signaling

The ability of any stem cell to self-renew and differentiate depends on the structural organization and cellular function of specialized anatomic microenvironments known as stem cell niches. These sequestered regions are typically populated by a supportive network of stromal cells. Stem cell niche stromal cells express soluble and membrane-bound proteins that regulate cell survival, proliferation, differentiation, and trafficking. Which statements is true about HSCs?

TLS Online TPP Program

#Question id: 2776

#Unit 2. Cellular Organization

There are five major types of histone proteins, but only four of them are considered as core histones. Which one of the following is NOT considered a core histone protein?

TLS Online TPP Program

#Question id: 31332

#Unit 5. Developmental Biology

When the epithelial cells and mesenchymal cells placed together, the same epithelium develops different structures according to the region from which the mesenchyme was taken, phenomena known as:

TLS Online TPP Program

#Question id: 1002

#Unit 1. Molecules and their Interaction Relevant to Biology

What would be the product of the transamination of the structure shown below? (The unionized forms are shown.)

TLS Online TPP Program

#Question id: 32273

#Unit 2. Cellular Organization

Which of the following membrane bound ER chaperone proteins require Ca2+ for their activities?
a. Calnexin 
b. Calreticulin
c. E3 ubiquitin ligase
d. Bip