What is the difference between a ligand-gated channel (like H1 or the AChR) and a voltage gated channel?
Q: NADPH inhibits glucose-6-phosphate dehydrogenase. What kind of inhibitor is NADPH?
A: Glucose-6-phosphate dehydrogenase (G6PD) is found in the cells of many organisms. It plays an…
Q: Which side chain contains a carboxamide group? O R1 O R2 R3 O R4 Question 3 At pH=7, the net charge…
A: Proteins are complex biomolecules made up of amino acids. They play critical roles in the…
Q: Which base "PAIRS WITH" the base shown below in a typical DNA double helix? Drag the correct base to…
A: Nucleotides are organic molecules that are composed of a nitrogenous base (purines or pyrimidines),…
Q: Match each type of molecule with the corresponding description. Answer choices may be used only…
A: The biological macromolecules can be classified as nucleic acids, proteins, carbohydrates and…
Q: How is the PDHC regulated?
A: PDHC refers to pyruvate dehydrogenase complex. Its regulation ensures that the rate of pyruvate…
Q: 5. Consider the thermodynamics of DNA replication. What are the different thermodynamic parameters…
A: DNA replication is a complex process that involves the unwinding of the double-stranded DNA…
Q: d. Much of the experimental research on the propagation of nerve signals has focused on an…
A: Nernst potential (V) can be calculated using following equation V = RT/zF ln (Xout/Xin) where V is…
Q: Which one of the following statements concerning the nature of fats is correct? Saturated fats are…
A: Simple fat or fat or triglycerides are fatty acid esters of glycerol. They serve as fuel reserves…
Q: A 1/10 dilution of enzyme extract has been done for the protein assay. The experimental results are…
A: Here we are undertaking spectrophotometric analysis to find out the amount of protein in an unknown…
Q: Calculate the pI of the following peptides: a. MASTERY b. STICKY c. DALLAS d. ART
A: the isoelectric point of a protein is the pH at which the net electric charge of that amino acid is…
Q: Respiration is related to how cells balance redox reactions in the metabolic pathway. It can be…
A: The respiratory quotient (RQ) is a measure of the ratio of carbon dioxide produced to oxygen…
Q: Are natural compounds such as cellulose and petroleum oil easier for microorganisms (eg. bacteria…
A: Microorganisms, such as bacteria, fungus, and algae, degrade and change organic compounds into…
Q: The membrane potential in animal cells depends largely on resting K+ channels. How do these channels…
A: ATP synthase is a large and complex enzyme that converts ADP and inorganic phosphate into ATP. The…
Q: The glutamate dehydrogenase (GDH) catalyses the following reaction: +H3N- H с CH₂ CH₂ COO •COO™ +…
A: First, we need to find the change in absorbance per time ( ∆A∆time ) . Since we are interested on…
Q: Draw your own PCR diagram to show the role of each component and relevance of each temperature shift…
A: The polymerase chain reaction or PCR is a method widely used to rapidly make multiple copies of a…
Q: Question 1 The dipeptide below is formed by linking the amino acid isoleucine via amide bond to the…
A: Amino acids are biomolecules that have an amino group, a carboxyl group and a side chain all linked…
Q: 5. The amino acid sequences of three peptide fragments are shown below. Peptide 1: QAMGRAGDLKYLGLHSV…
A: Hi! Thank you for the question. We are authorized to answer three subparts at a time, since you have…
Q: When the amino acid alanine (R-group is CH3) is added to a solution with a pH of 7.3, alanine…
A: Introduction: The answer provides an explanation of how the amino acid alanine (with a CH3 side…
Q: HDL is a lipid that transports carbohydrates in the blood True False
A: False. HDL (high-density lipoprotein) is a type of lipoprotein that transports cholesterol in the…
Q: Production of a recombinant protein by E. coli is proportional to cell growth. Ammonia is used as a…
A: Recombinant proteins are proteins that are produced through genetic engineering. They are created by…
Q: Identify whether each monosaccharide is an aldose or a ketose. Н НО Н Н НО- CHO ОН H -ОН ОН CH2OH…
A: Monosaccharides are the building blocks of polysaccharide carbohydrates. Monosaccharides are also…
Q: Properties of somatotropic hormone. Hypo- and hyperfunction.
A: Somatotropin hormone, also known as human growth hormone (HGH), is a peptide hormone that is…
Q: Discuss briefly the role of (a) 10% hydrochloric acid (b) 10% Na2CO3, and (c) anhydrous Na2SO4 in…
A: Alkaloids are a diverse group of naturally occurring compounds that are produced by plants, fungi,…
Q: Create an illustrated step-by-step schematic diagram of the following Analysis of Lipids: e.…
A: Lipids are diverse groups of organic compounds which consist of fats, oils and hormones. Lipids are…
Q: 1- Describe any errors in your technique. How could you improve upon your technique in order to get…
A: Spectroscopy is used to determine the concentration of a substance. This technique is dependent on…
Q: Create an illustrated step-by-step schematic diagram of the following Analysis of Lipids: a)…
A: Lipids are biomolecules that do not have a fixed chemical structure like carbohydrates or amino…
Q: Draw and label the Lineweaver–Burk, Plots for each type of inhibitor.
A: The LB plot has 1[S0] as X-axis and 1v0 as Y-axis. In all the below graphs, the GREEN line indicates…
Q: What is the advantage of having an amino acid with a negative charge? Please explain using an…
A: Amino acids - are building blocks of proteins and alpha carbon of amino acids contains amine group,…
Q: Utilising the provided class data generate the following graphs: I) Michaelis Menten; II)…
A: Enzymes kinetics - is the study of the reaction rate of enzyme catalyzed reactions. The reaction…
Q: Fill in the chart below: Carbohydrate Protein Nucleic Acid Lipids HO H OH H H Circle one monomer in…
A: Carbohydrates, proteins , nucleic acids and lipids are the bio molecules. they are produced by…
Q: Different breeds of Korean cattle produce meat with varying amounts of stearic, linoleic and oleic…
A: Fatty acid synthase (FAS) is a large multifunctional enzyme that is responsible for the synthesis of…
Q: In bacterial teansfomation, why is 42oC being used as the chosen temperature for heat shock…
A: In bacterial transformation, heat shock is used to increase the efficiency of the transformation…
Q: Lysozyme is an enzyme that hydrolyzes bacterial cell wall…
A: Lysozymes are antibacterial agents that have the ability to hydrolyze the cell wall of bacteria. The…
Q: 148. A 42-year-old man has persistent swelling and tenderness of his right great toe joint. Turbid…
A: Gout is a type of arthritis that is caused by the buildup of uric acid crystals in the joints. Uric…
Q: What kind of protein is casein? POST-LABORATORY QUESTIONS: What is the isoelectric point of casein?…
A: Since you have posted a question with multiple sub parts, we will provide the solution only to the…
Q: 4. Mutations are changes to DNA sequences or chemical modifications of those sequences. If DNA were…
A: Methylation is a chemical modification of DNA in which a methyl group (-CH3) is added to a cytosine…
Q: Cell communication review
A: Cell communication refers to the process by which cells interact with each other to coordinate their…
Q: Briefly comment on the differences of using a fixed-time assay versus a kinetic assay to measure…
A: Fixed-time and kinetic assays are two common methods to measure enzyme activity. In a fixed-time…
Q: Define: simple diffusion, facilitated diffusion. short answer please
A: The movement of molecules and ions across the cell membrane, which is the selectively permeable…
Q: H₂C-O HC-O m F SMAAA H₂C-O m Saturated fat The diagram above is most specifically an example of a:…
A: Triglycerides or triacylglycerides or simple fat. are fatty acid esters of glycerols. In…
Q: has the greatest structural variability. a amine b. carbonyl L cailway! d. a carbon e. co carbon…
A: The answer is c. a carboxyl. All amino acids have a basic three-component structure consisting of an…
Q: You are working in a lab that discovers a small molecule inhibitor that prevents biotin from being…
A: In human, there are many enzymes involved in different pathways. Some of the enzymes requires ions,…
Q: The gene encoding the E. coli enzyme enolase begins with the sequence ATGTCCAAAATCGTA. What is the…
A: The flow of genetic information from DNA to RNA and then RNA to protein is called central dogma. It…
Q: Which of the following is NOT a glucose precursor in animals? Glycerol Leucine O Alanine O Pyruvate…
A: Glucose is a type of carbohydrate. It is a monosaccharide (simple sugar). Its chemical formula is…
Q: Draw the resonance structure of a tripeptide peptide backbone, indicating the N- and C-terminal and…
A: Peptides are molecules composed of amino acids joined together through peptide bonds. The peptide…
Q: Provide an example of how multiple membrane transport proteins typically work together to move a…
A: The movement of substances across biological membranes that separate the interior of cells or…
Q: Exercise 4. Write the formulas of the chemical compounds contained in the CHD.
A: Chemical compounds - quercetin, rutin, and avicularin are plant isolated flavonols and flavonoid.…
Q: The 4 graphs above represent the change in enzyme kinetics with the individual addition of different…
A: Enzymes kinetics - is the study of the reaction rate of enzyme catalyzed reactions. The reaction…
Q: Use the information on the proteins given to solve the questions: A. Draw a UV-Vis spectrum of…
A: Chromatography is a laboratory technique used to separate mixtures of different components. It works…
Q: The atmospheric ratio of peroxyacetic nitric anhydride (PAN) to PAN + inorganic nitrite varies from…
A: The observation that high values of the PAN/PAN+inorganic nitrite ratio are associated with…
What is the difference between a ligand-gated channel (like H1 or the AChR) and a voltage gated channel?
Step by step
Solved in 2 steps
- Conformational changes in channel proteins brought about by voltage changes are responsible for opening and closing Na+ and K+ gates during the generation of an action potential. (True or false?)What properties of ion channels allow them to generate the large, rapid changes in membrane potential?How does the voltage sensor of a voltage-gated ion channel work?
- Which is the state of voltage gated channel when the membrane potential has changed from resting (-40mV) to +20mV? a)Closed state b)Open state c)İnactivated stateIn somewhat simple terms please explain the differences between electrical signal propagation through gap junctions and synapses. Which types of cells use each respective method, and how do these methods of transport differ?Which statement is TRUE regarding the Na+ voltage-gated channel in neurons? A) Similar to the potassium ion channel, it exists as a tetramer in the membrane. B) Aspartate residues are part of the voltage-sensing helices. C) Positive membrane potentials on the extracellular side will close the channel. D) Ion specificity comes from the voltage-sensing helices.
- Which of the following statements about voltage gated channels is true? Voltage-gated sodium channels open at a higher (more positive) membrane potential than do potassium-gated channels Voltage-gated sodium channels open at a lower (more negative) membrane potential than do potassium-gated channels Sodium- and postassium-gated channels open at about the same membrane potential, but they have different effects because there are different numbers of the two kinds of channels in neuron cell membranesChoose the correct answer: A) When the voltage gated K+ channels open K+ moves down its concentration gradient from the ECF to inside the cell. O B) The value for resting membrane potential is closer to the EK+ (Equilibrium potential for K+) than the ENa+ O C) When the membrane potential is at rest the membrane is more permeable to Na+ than it is to K+ O D) Closing of the voltage-gated Na+ channels increases the permeability of the membrane to Na+At point A, what state are the voltage-gated sodium channels and potassium channels in?
- Separately, draw a table using arrows to depict the appropriate magnitude and direction of the forces and ion fluxes at different membrane potentials for a ligand-gated channel that is equally permeable to both ion X+ and ion Y+. The equilibrium potential for ion X+ is -60 mV, and the equilibrium potential for ion Y+ is -20 mV. Which item (a, b, c, or d) best represents the forces and fluxes for a membrane potential of +20 mV? Upwards arrows means outward direction and downwards arrow means inward direction. The length of the arrow determines the magnitude.In the above diagram, letter C represents: A voltage-gated K+ channel A leaky Na+ channel A leaky K+ channel A voltage-gated Na+ channelname the three ways in which an ion channel can be gated.