During acrosome-reacted sperm pathway sperm that have undergone the acrosome reaction bind directly to which of the glycoprotein?

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#Question id: 15339

#Unit 4. Cell Communication and Cell Signaling

HSCs begin their life in close contact with osteoblasts located close to the lining of the endosteal cavity. Once differentiated to the pre-pro-B-cell stage, the developing B cells require Which type of signals from the chemokine, which is secreted by a specialized set of stromal cells?

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#Question id: 5527

#Unit 5. Developmental Biology

Ectoderm cells related with anterior neural crest cells condense and form

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#Question id: 18811

#Unit 13. Methods in Biology

In flow cytometry, what is forward scatter a measure of?

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#Question id: 821

#Unit 1. Molecules and their Interaction Relevant to Biology

Why the thermophilic bacteria’s are not melted at the temp on which the most of the proteins have melts?

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#Question id: 3545

#Unit 8. Inheritance Biology

Consider the accompanying pedigree of a rare autosomal recessive disease, PKU. Male with PKU marry with normal female whose father is PKU. What is probability of child affected with PKU?