TC cells express a(n) ________ protein co-receptor

A) CD4
B) CD8
C) IgM
D) IgG


Answer: B

Biology & Microbiology

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A fertilized egg is called a  

A.  zygote B.  ovule C.  oocyte D.  blastocyst

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A paraphyletic group contains

A. a common ancestor but not all of its descendants. B. groups of species with different common ancestors. C. a common ancestor and all of its descendants. D. a common ancestor and all of its descendants but not the most recent common ancestor. E. every species ever derived from a common ancestor.

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A protein normally synthesized in fat cells; it is thought to act as a negative feedback signal normally released by fat stores to decrease appetite and increase fat metabolism

What will be an ideal response?

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A cell can crawl through a tissue because of the transmembrane ______________ proteins that can bind to fibronectin outside of the cell

(a) integrin (b) collagen (c) gap junction (d) claudin

Biology & Microbiology