The human zona pellucida has four major glycoproteins— ZP1, ZP2, ZP3, and ZP4

TLS Online TPP Program

#Id: 9138

#Unit 10. Ecological Principles

Kleptoparasitism, meaning parasitism by theft, is a form of feeding where one animal takes food that another has caught.

TLS Online TPP Program

#Id: 2800

#Unit 13. Methods in Biology

A chromatogram is a pictorial record of the detector response as a function of elution volume or retention time.

TLS Online TPP Program

#Id: 8146

#Unit 2. Cellular Organization

TLS Online TPP Program

#Id: 1585

#Unit 5. Developmental Biology

Ability to initiate a primitive streak is found throughout the marginal zone.

TLS Online TPP Program

#Id: 6495

#Unit 3. Fundamental Processes

TFIIB, TFIIE, and TFIIH are required to melt DNA to allow polymerase movement. The last factors to join the initiation complex are TFIIE and TFIIH.