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: 4246

#Unit 3. Fundamental Processes

Which one of the following structures, if missing, would usually prevent translation from starting?

TLS Online TPP Program

#Question id: 4247

#Unit 3. Fundamental Processes

Which of the following processes occurs when termination of translation takes place?

TLS Online TPP Program

#Question id: 4248

#Unit 3. Fundamental Processes

Post-translational modifications of proteins may include which of the following processes?

TLS Online TPP Program

#Question id: 4249

#Unit 3. Fundamental Processes

Which of the following statements is true about protein synthesis in prokaryotes?

TLS Online TPP Program

#Question id: 4250

#Unit 3. Fundamental Processes

Which of the following types of mutation, resulting in an error in the mRNA just after the AUG start of translation, is likely to have the most serious effect on the polypeptide product?

TLS Online TPP Program

#Question id: 4251

#Unit 3. Fundamental Processes

Which of the following statements correctly describes the effect a nonsense mutation would have on a gene?