Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 55554
TLS Online TPP Program

#Question id: 5662

Mouse sperm contain receptor proteins that bind to a glycoprotein (ZP3) in the zona pellucida of mouse eggs. Binding of ZP3 receptors to ZP3 initiates the sperm’s acrosomal reaction. All of the following experimental observations would be expected EXCEPT:

#Unit 5. Developmental Biology

  1. Injecting eggs with antibodies that bind to ZP3 blocks in vitro fertilization.

  2. Incubating sperm with purified ZP3 prior to mixing sperm and eggs blocks in vitro fertilization.

  3. Coating synthetic beads with a different glycoprotein, ZP2, fails to lead to sperm aggregation on the beads.

  4. Coating synthetic beads with ZP3 leads to sperm aggregation on the beads.

More Questions
TLS Online TPP Program

#Question id: 11117

#Unit 7. System Physiology – Animal

The molecule that prevents lung collapse by lowering the surface tension of the water film lining each alveolar sac is called:
TLS Online TPP Program

#Question id: 11116

#Unit 7. System Physiology – Animal

Which one of the following structures is NOT part of the respiratory zone:
TLS Online TPP Program

#Question id: 11115

#Unit 7. System Physiology – Animal

The nasal cavity is separated from the oral cavity by:
TLS Online TPP Program

#Question id: 11114

#Unit 7. System Physiology – Animal

The amount of air exchanged during normal quiet breathing is about:
TLS Online TPP Program

#Question id: 11113

#Unit 7. System Physiology – Animal

Exchange of both oxygen and carbon dioxide through the respiratory membrane occurs by:
TLS Online TPP Program

#Question id: 11112

#Unit 7. System Physiology – Animal

The respiratory movement representing the total amount of exchangeable air is the: