TLS Online TPP Program

#Question id: 24282


Which of the following statement describes outside-in signaling?

#Unit 4. Cell Communication and Cell Signaling
  1. Binding of integrins to their ligands induces conformational changes in their cytoplasmic domains, directly or indirectly altering their interactions with cytoplasmic proteins
  2. Binding of integrins to their ligands induces conformational changes in their transmembrane domains, directly or indirectly altering their interactions with cytoplasmic proteins
  3. Binding of cytoskeletal proteins intracellularly induces conformational changes in extracellular domains of integrins, so it unable to bind to the ligands
  4. intracellular signaling pathways can, via adapter proteins, modify the ability of integrins to bind to their extracellular ligands
More Questions
TLS Online TPP Program

#Question id: 4309

#Unit 3. Fundamental Processes

Imagine that you've isolated a yeast mutant that contains histones resistant to acetylation. What phenotype would you predict for this mutant?

TLS Online TPP Program

#Question id: 4310

#Unit 3. Fundamental Processes

Which of the following processes destroys RNA molecules in a cell if they have a sequence complementary to an introduced double-stranded RNA?

TLS Online TPP Program

#Question id: 4311

#Unit 3. Fundamental Processes

At the beginning of this century, there was a general announcement regarding the sequencing of the human genome and the genomes of many other multicellular eukaryotes. Many people were surprised that the number of protein-coding sequences was much smaller than they had expected. Which of the following types of DNA make up the rest of the human genome?

TLS Online TPP Program

#Question id: 4312

#Unit 3. Fundamental Processes

Among the newly discovered small noncoding RNAs, one type helps to reestablish ethylation patterns during gamete formation and blocks expression of some transposons. Which of the following types of RNA is responsible for this function?

TLS Online TPP Program

#Question id: 4313

#Unit 3. Fundamental Processes

Which of the following statements best describes the characteristics of siRNA?

TLS Online TPP Program

#Question id: 4314

#Unit 3. Fundamental Processes

A researcher introduces double-stranded RNA into a culture of mammalian cells and can identify its location or that of its smaller subsections experimentally, using a fluorescent probe. Some time later, she finds that the introduced strand separates into single-stranded RNAs, one of which is degraded. What does this enable the remaining strand to do?