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TLS Online TPP Program

#Question id: 15765

What is symmetrical differentiation?

#Unit 5. Developmental Biology
  1. A stem cell have the ability to divide to produce one stem cell & one committed cell.
  2. A stem cell have the ability to divide to produce either two stem cells or two committed cells.
  3. A stem cell have the ability to divide to produce only two committed cells.
  4. A stem cell have the ability to divide to produce two stem cells & two committed cells.
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TLS Online TPP Program

#Question id: 1102

#Unit 4. Cell Communication and Cell Signaling

Caffeine is an inhibitor of phosphodiesterase. Therefore, the cells of a person who has recently consumed coffee would have increased levels of which of the following molecules?
TLS Online TPP Program

#Question id: 16320

#Unit 7. System Physiology – Animal

Time related stress:
TLS Online TPP Program

#Question id: 12301

#Unit 7. System Physiology – Animal

Which of the following would likely lead to hyponatremia?
TLS Online TPP Program

#Question id: 4822

#Unit 8. Inheritance Biology

In a particular species of mammal black hair (B) is dominant to green hair (b) and red eyes (R) are dominant to white eyes (r). If a BbRr individual is mated with a bbrrindividual the expected phenotypic ratio of the offspring is 1 black-red : 1 black-white: 1 green-red : 1 green-white. However, when you mate these individuals you find that the phenotypic ratio of the offspring is 6 black-red :1 black-white : 1 green-red : 6 green-white. What could account for this difference?
TLS Online TPP Program

#Question id: 98

#Unit 1. Molecules and their Interaction Relevant to Biology

The elasticity and resistance to compression of connective tissue is due to