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TLS Online TPP Program

#Question id: 2052

Why have pigs have been proposed as a source of organs for xenotransplantation to humans?

#Unit 4. Cell Communication and Cell Signaling

  1. They do not pose a risk of zoonoses

  2. Their cell surface glycoproteins bear galactose α-1,3-galactose structures

  3. They lack endogenous virus sequences

  4. Their hearts are an appropriate size and the pigs can be genetically modified to limit the possibility of hyperacute rejection

More Questions
TLS Online TPP Program

#Question id: 5559

#Unit 5. Developmental Biology

During fertilization, the acrosomal contents ________.
TLS Online TPP Program

#Question id: 5560

#Unit 5. Developmental Biology

In a newly fertilized egg, the vitelline layer ________.
TLS Online TPP Program

#Question id: 5561

#Unit 5. Developmental Biology

In sea urchins, the "fast block" and the longer lasting "slow block" to polyspermy, respectively, are ________.
TLS Online TPP Program

#Question id: 5562

#Unit 5. Developmental Biology

In an egg cell treated with a chemical that binds calcium and magnesium ions, the ________.
TLS Online TPP Program

#Question id: 5563

#Unit 5. Developmental Biology

In mammalian eggs, the receptors for sperm are found in the ________.
TLS Online TPP Program

#Question id: 5564

#Unit 5. Developmental Biology

At the moment of sperm penetration, human eggs ________.