What is cell signalling - Study guides, Class notes & Summaries

What are the external TLRs - TLR-5:Bacterial Flagellin TLR-4:Bacterial LPS TLR-3 recognizes? - Double stranded Viral RNA TLR-7 recognizes? - Single stranded Viral RNA TLR-5 recognizes? - bacterial flagellin TLR-4 recognizes? - Bacterial LPS Leukocytes in the order to action - 1. Neutrophils - Mass quantities 2. Monocytes 3.Lymphocytes - days later 2 cell type recognition - 1. NK - looking at your own cells 2. Macrophages - looking at pathogen directly Macrophages - use toll like recep...

1) What is desensitization? 2) What kind of cell receptors can this happen to? - Answer-1) When a cell decreases the amount of receptors on its surface to decrease the amount of response that the cell has to a ligand/stimulus 2) Can happen to any cell surface signalling receptor How is the endocytic pathway mediated? - Answer-Clathrin based endocytosis Describe the endocytic pathway in a stepwise fashion - Answer-1) Plasma membrane breaks off into free floating vesicles in the cytoplasm 2...

What are the 5 well-known enzyme-linked cell surface receptors? 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 Serine/Threonine residues on IC signalling molecules How are RTK and TK Associat...

PNB 3255 Exam I Questions and Answers Already Passed Nervous system is ___% of human body weight 3% or ~4.5 lbs The CNS includes: Brain, spinal cord, and retina The PNS includes: Neurons outside the CNS, cranial / spinal nerves, ganglia Autonomic nervous system controls: Visceral functions such as heart rate, digestion, salivation, respiration CNS development begins at what day of intrauterine development? Day 22 Describe the process of CNS formation. The nervous system develops from the ne...

Topic 1 Introduction to Molecular Cloning 1. The goal of this integrated practical course is to purify a protein. In general, what is the value of protein purification to medical research? What information can a purified protein provide and what techniques can be developed/employed once you have a purified protein?  In vitro studies - Small molecule interactions, protein binding partners etc  Producing antibodies  Determination of structure Purification of the protein is a valua...

AQA GCSE Biology - Paper 1 Questions And Answers Graded A+. What does a nucleus do? - correct answer. It contains genetic material and controls the activities of the cell What does cytoplasm do? - correct answer. It'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? - correct answer. It holds the cell together and controls what goes in and out What do mitochondria do...

Why would covalent bonds break in water? Why can they? - Because more stable or energetically favored bonds could be formed. They can break because the loss of energy by breaking hydrogen bonds in compensated for in the formation of new covalent bonds. Limitation to eukaryotic cells and photosynthesis - The sea slugs that live in symbiotic relationships with cyanobacteria or algae. The algae is not broken down or digested and absorbed into the slug's body. There is then a horizontal gene t...

What are the 5 well-known enzyme-linked cell surface receptors? 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 Serine/Threonine residues on IC signalling molecules How are RTK and TK A...

What are the 5 well-known enzyme-linked cell surface receptors? - 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 Serine/Threonine residues on IC signalling molecules How are RTK and T...

What are circulating hormones? - ANSWERWhat hormones enter the blood stream? What are local hormones? - ANSWERWhat are hormones that act within the same area without first entering the blood stream? What are paracrine hormones? - ANSWERWhat are the local hormones that are secreted into interstitial fluid and act on nearby cells? What are paracrine and autocrine hormones categorized as? - ANSWERWhat hormones are included in the local hormones? What is one way to classify hormones? - A...