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12 Questions

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Cell Signaling Properties Quiz

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Questions and Answers

What enables a cell to judge the strength of the response?

Change in gene expression

Graded signaling (correct)

Cell size increase

Cell proliferation probability

Which signaling property is crucial for producing varying patterns of gene expression?

Lipid signaling molecules

Space

Time (correct)

Adaptor proteins

What is the role of adaptors in cellular signaling?

Bridge signaling proteins to create a hub (correct)

Direct cell's judgment of response strength

Enhance cell proliferation probability

Mediate the assembly of signaling complexes

How does Ras become active in cellular signaling pathways?

Binding to GDP and then converting GDP to GTP Signup and view all the answers

What mediates the assembly of signaling complexes in cells?

Adaptor proteins Signup and view all the answers

Which property of signaling proteins is important for their interaction with each other?

Space proximity Signup and view all the answers

What is the role of G-protein ACTIVATING or EXCHANGE (GAP and GEF) factors in signaling?

Dictate the degree of signaling at the cell membrane Signup and view all the answers

What is the function of ITAM (Immunoreceptor Tyrosine Activation Motif) in signaling?

Providing a site for kinase phosphorylation of tyrosine residues Signup and view all the answers

What is the main role of ZAP-70 in the signaling process described in the text?

Phosphorylating LAT and SLP-76 to initiate downstream signaling modules Signup and view all the answers

How does concentration of receptor-associated Lck increase in the signaling cascade?

Recruiting co-receptors to the TCR/BCR Signup and view all the answers

What is the role of Csk in the signaling cascade described in the text?

Phosphorylates Lck to promote 'off' conformational configuration Signup and view all the answers

Which statement accurately describes the role of second messengers in signal transduction?

Second messengers function downstream of receptor interactions Signup and view all the answers