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TLS Online TPP Program

#Question id: 1022

Why are we concerned at all with monitoring emerging/reemerging diseases?

#Unit 4. Cell Communication and Cell Signaling

  1. These represent growing threats to human health that will require new scientific research and resources to effectively combat.

  2. Because globalization (greater trade and travel between countries) leads to more chances for spread of illnesses into new areas and populations. Monitoring these illnesses will help us to protect people.

  3. Because the speed of travel has increased greatly. With increased speed of travel, it is far more likely that a serious pathogenic threat from one area of the world can spread rapidly across the globe in a very fast manner. We need to monitor the occurrence of these illnesses to try to protect populations.

  4. All of the above.

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TLS Online TPP Program

#Question id: 15783

#Unit 5. Developmental Biology

During the formation of induced pluripotent stem cell, what is the function of Klf-4?
TLS Online TPP Program

#Question id: 15782

#Unit 5. Developmental Biology

Adult cells may be reprogrammed to gain pluripotency by modifying the genes namely 
TLS Online TPP Program

#Question id: 15781

#Unit 5. Developmental Biology

Chemical regulation of stem cells takes the form of secreted proteins from surrounding cells that influence stem cell states and progenitor differentiation through endocrine, paracrine, or juxtacrine mechanisms. These signaling factors:
TLS Online TPP Program

#Question id: 15780

#Unit 5. Developmental Biology

In drosophila, the somatic cells of the hub are able to regulate stem cell proliferation by secreting the paracrine factor Unpaired onto the cells attached to them. Unpaired activates the JAK-STAT pathway in the adjacent germ stem cells to specify their self-renewal. Those cells that are distant from the paracrine factor cannot receive this signal, they begin their differentiation into the sperm cell lineage. This means hub cells act as
TLS Online TPP Program

#Question id: 15779

#Unit 5. Developmental Biology

During stem cell regulation extracellular mechanisms leading to intracellular changes that regulate stem cell behaviour. Which of the following is not consider as extracellular mechanisms for stem cell regulation?
TLS Online TPP Program

#Question id: 15778

#Unit 5. Developmental Biology

Stem cell regulation is highly influenced by the microenvironment that surrounds a stem cell and is known as the