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: 18874

#Unit 9. Diversity of Life Forms

Plant spores are produced directly by  
TLS Online TPP Program

#Question id: 17672

#Unit 9. Diversity of Life Forms

Protection from desiccation
TLS Online TPP Program

#Question id: 19820

#Unit 12. Applied Biology

The hypersensitive response is triggered by certain unique molecules, called elicitors, of pathogen origin. The elicitors are recognized by receptor-like molecules present in 
TLS Online TPP Program

#Question id: 773

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following describes the function of an enzyme known as Dicer?
TLS Online TPP Program

#Question id: 2269

#Unit 2. Cellular Organization

The rough ER is so named because it has an abundance of _______________ on it.