What is cell signalling Study guides, Class notes & Summaries
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L03 - Cell Signalling and Cancer Test Questions & 100% Correct Answers Latest Update
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Why is cell signalling complex? - -not isolated pathways 
-all work together 
What is intracellular signalling? - a set of linked biochemical events that connect a specific 
biological stimulus with a specific cellular response 
What sorts of cell behaviours are controlled with communication between cells or environment? - 
their ability to... 
-survive 
-divide 
-migrate 
-differentiate 
-die
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LATEST Biology A level OCR 100% (400+ QUESTIONS WITH VERIFIED SOLUTIONS 2023/2024
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What is the MAIN role of membranes and what are the other roles? - ANSWER - 
COMPARTMENTALISATION 
-site of chemical reactions 
-cell signalling 
-cell adhesion 
How do cell membranes compartmentalise? - ANSWER Membranes are hydrophobic layers that 
separate different regions of substances dissolved in water. This hydrophobic layer acts as a barrier 
preventing the movement of hydrophilic molecules from one region to another. It keeps one 
compartment separate from another. 
What are the 3 examp...
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CPPS 325 FINAL EXAM WITH 100% CORRECT ANSWERS 2023/2024 Graded A+
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CPPS 325 FINAL EXAM WITH 100% CORRECT ANSWERS 2023/2024 Graded A+. What are the 5 well-known enzyme-linked cell surface receptors? - Correct Answer-1. 
Receptor Guanylyl Cyclase: produces cGMP 
2. RTK: phosphorylate tyrosine residues leading to association of signalling molecules 
and cascade 
3. TK Associated Receptors: associate with proteins having TK activity 
4. Receptor Tyrosine Phosphates: Removes phosphate on tyrosine residues 
5. Receptor Serine/Threonine Kinases: phosphorylate specific...
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Essential Cell Biology, 5th Edition, by Bruce Alberts, Exam 4 Latest Update With Multiple, Correctly Answered Questions |Single & Multiple choice and essays|
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Essential Cell Biology, 5th Edition, by Bruce Alberts, Exam 4 Latest Update With Multiple, Correctly Answered Questions |Single & Multiple choice and essays| 
 
What organelles are part of the endomembrane system? - Golgi, ER, lysosomes, endosomes, chloroplasts, peroxisomes 
 
T/F: Mitochondria is part of the endomembrane system - False. 
 
Where are proteins in chloroplast synthesized? - Cytosol and chloroplast 
 
What transports the components of the endomembrane syste...
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UNC Biol 205 Exam 2 Questions With Verified Answers
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UNC Biol 205 Exam 2 Questions With 
Verified Answers 
when cells respond to an extracellular signal, they most often convert the information carried by 
this molecule from one form to another. What is this process called? - answersignal 
transduction 
When does signal transduction begin? - answerwhen the receptor on a target cell recieves 
and incoming extracellular signal and then produces intracellular signaling molecules that alter 
cell behavior 
extracellular signal molecules, released loca...
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CPPS EXAM PRACTICE QUESTIONS WITH CORRECT ANSWERS 2023/2024 (Graded)
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CPPS EXAM PRACTICE QUESTIONS WITH CORRECT ANSWERS 2023/2024 (Graded). What isSH1 domain characterized by? - Correct Answer-Catalytic domain of a protein, 
for example the receptor. and it has the kinase activity. It is responsible for 
phosphorylating tyrosine residues. 
What is SH2 domain characterized by? - Correct Answer-Binds peptides with 
consensus (positional information on C-terminal side of the phosphorylated tyrosine). 
Very specific. 
Mediates protein-protein interactions in cellular ...
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DESCRIBE THE NATURE AND FUNCTION OF EXTRACELLULAR MATRIX (ECM) COMPONENTS, INCLUDING PROTEOGLYCANS AND FIBROUS PROTEINS QUESTIONS WITH 100% CORRECT ANSWERS!!
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what is the ECM? - Answer-the non-cellular component present within all tissues and organs 
what is the ECM composed of? - Answer--composed of collagen I and elastin 
-fundamentally composed of water, proteins and polysaccharides 
-a complex network of proteins and polysaccharides 
what is the ECM secreted by? - Answer-secreted locally by cells and remain closely associated with them 
what does the ECM provide? - Answer--provides structural, adhesive and biochemical signalling support 
-not only...
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UNC Biol 205 Exam 2 Questions With Verified Answers
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UNC Biol 205 Exam 2 Questions With 
Verified Answers 
when cells respond to an extracellular signal, they most often convert the information carried by 
this molecule from one form to another. What is this process called? - answersignal 
transduction 
When does signal transduction begin? - answerwhen the receptor on a target cell recieves 
and incoming extracellular signal and then produces intracellular signaling molecules that alter 
cell behavior 
extracellular signal molecules, released loca...
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AQA GCSE Biology - Paper 1 Exam Questions With 100% Correct Answers
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AQA GCSE Biology - Paper 1 Exam 
Questions With 100% Correct Answers 
What does a nucleus do? - answerIt contains genetic material and controls the activities of 
the cell 
What does cytoplasm do? - answerIt's a gel-like substance where most of the chemical 
reactions happen. It contains enzymes that control these chemical reactions 
What does a cell membrane do? - answerIt holds the cell together and controls what goes in 
and out 
What do mitochondria do? - answerThese are where most of the r...
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CPPS 325 FINAL EXAM With Updated &Verified Answers 2023/2024
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CPPS 325 FINAL EXAM With Updated &Verified Answers 2023/2024 
 
What are the 5 well-known enzyme-linked cell surface receptors? Correct Answer 
1. Receptor Guanylyl Cyclase: produces cGMP 
2. RTK: phosphorylate tyrosine residues leading to association of signalling molecules and cascade 
3. TK Associated Receptors: associate with proteins having TK activity 
4. Receptor Tyrosine Phosphates: Removes phosphate on tyrosine residues 
5. Receptor Serine/Threonine Kinases: phosphorylate specific Se...
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