Match the below types of cell communication with the appropriate descriptions Small hydrophobic proteins travel through the endocrine glands and cross to plasma membrane to directly effect gene transcription [ Choose ] [Choose ] contact-dependant Endocrine Paracrine Electrical signals which can be converted to Neuronal chemical signals are synaptic junctions Cell-surface receptors interact with neighboring cell [ Choose ] signaling molecules are excreted by the cell to [ Choose ] a local region to influence a tissues behaviour

Match the below types of cell communication with the appropriate descriptions Small hydrophobic proteins travel through the endocrine glands and cross to plasma membrane to directly effect gene transcription [ Choose ] [Choose ] contact-dependant Endocrine Paracrine Electrical signals which can be converted to Neuronal chemical signals are synaptic junctions Cell-surface receptors interact with neighboring cell [ Choose ] signaling molecules are excreted by the cell to [ Choose ] a local region to influence a tissues behaviour

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter9: Cell Communication

Section: Chapter Questions

Problem 1VCQ: Figure 9.8 HER2 is a receptor tyrosine kinase. In 30 percent of human breast cancers, HER2 is...

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WRITE ABOUT A THEME: ORGANIZATION The properties oflife emerge at the biological level of the cell. The highly regulated process of apoptosis is not simply the destruction of acell; it is also an emergent property. Write a short essay (about100–150 words) that briefly explains the role of apoptosis inthe development and proper functioning of an animal, and describe how this form of programmed cell death is a process thatemerges from the orderly integration of signaling pathways.
Figure 9.8 HER2 is a receptor tyrosine kinase. In 30 percent of human breast cancers, HER2 is permanently activated, resulting in unregulated cell division. Lapatinib, a drug used to treat breast cancer, inhibits HER2 receptor tyrosine kinase autophosphorylation (the process by which the receptor adds phosphates onto itself), thus reducing tumor growth by 50 percent. Besides autophosphorylation, which of the following steps would be inhibited by Lapatinib? Signaling molecule binding, dimerization, and the downstream cellular response. Dimerization, and the downstream cellular response. The downstream cellular response. Phosphatase activity, dimerization, and the downsteam cellular response.
cell communication through plasma membrane What are the 4 types-of receptors and their downstream pathways. Draw a quick sketch of each step with a quick description
Which statement about the M6P receptor is true/accurate? Answers: It is involved in retrieval of ER resident proteins from the Golgi and transport back to the ER. Due to no difference in pH in the lumen of each, it has the same affinity for M6P in the Golgi as in the endosome. Due to a slight difference in pH in the lumen of each, it has a high affinity for M6P in the Golgi and a low affinity for M6P in the endosome. Due to a slight difference in pH in the lumen of each, it has a low affinity for M6P in the Golgi and a high affinity for M6P in the endosome.
Pathway divergence occurs when: signaling pathways use a common intermediate one signaling pathway triggers another O signaling pathways produce the same outcome signaling pathways split to produce multiple outcomes Question 8 Where are receptor tyrosine kinases usually phosphorylated? O tyrosine residues in the allosteric regulatory portion tyrosine residues in the N-terminal portion tyrosine residues in the transmembrane portion O tyrosine residues in the C-terminal portion
Give typing answer with explanation and conclusion Dimerization of transmembrane receptors can facilitate: ALL OF THESE signal transduction NONE OF THESE cross-phosphorylation tyrosine kinase recruitment
In biological tissues, what is the average concentration of cell signaling chemicals? Strictly no plagiarism.
Which of the following mechanism will be activated if there is a shortage of cellular and endoplasmic reticulum Ca2+ reserve? O DAG will activate protein kinase C to release calcium bound to calmodulin ER membrane protein STIM1 will activate plasma membrane Orail channel All of the other mechanisms will be activated IP3 signaling will release stored calcium from the ER DAG will activate protein kinase C to activate store operated calcium channel in the plasma membrane < Previous Next ▸
Define Integrin adhesion receptor– mediated signaling pathways control diverse cell functions.
27) Fill in the blanks Cells adjacent to one another frequently communicate through Other forms of cell-cell communication through In extracellular signaling ligand-receptor interaction induce; 28) Cell-to-cell communication by extracellular signaling usually involves six steps , sort the below given steps according to happening order; Removal of the signal, which usually terminates the cellular response – degradation of ligand- A change in cellular metabolism, function, or development CELLULAR RESPONSE triggered by the receptor-ligand complex – specific to the ligand-receptor complex Release of the signaling molecule by the signaling cell Transport of the signal to the target cell Synthesis of the signaling molecule by the signaling cell Detection of the signal by a specific receptor protein (receptor-ligand specificity 29) Polyethylene can be obtained in two different forms. High-density polyethylene (0.94 g/cm3) is a linear polymer. Low-density polyethylene (0.92 g/cm3) is a…
Cell signaling in plant and animal cells is similar in those ways and different in others. Offer one or more hypotheses for these similarities and differences, and cite specific examples.
Non-canonical Hedgehog signaling results in actin cytoskeleton rearrangements, leading to cellmovement and changes in cell shape. Describe how changes to the actin cytoskeleton lead to cellmovement and changes in cell shape.You do not need to draw out the signaling pathway again (#1b). Your answer should focus onthe changes to the actin cytoskeleton. Drawings will be helpful!