Which statement(s) regarding ions is true when a neuron is at rest? Positively charged cations are attracted to the intracellular fluid Positively charged anions are attracted to the intracellular fluid Negatively charged anions are drawn to the intracellular fluid Negatively charged anions are balanced across the cell membrane
Q: 1. ATP ACCOUNTING Provide what is being asked for. Show all relevant calculations and summarize your…
A: Beta Oxidation is the process to break down fatty acid. This process takes place in mitochondria (in…
Q: Which of the peptide sequences below best matches the hydropathy plot shown? 5 10 15 Residue Number…
A: Hydropathy plot is a quantitative analysis of the distribution of amino acids in a protein.…
Q: 1. Arabinose is a pentose and an aldose 2. Glucose-6-phosphate cannot leave cell because its size is…
A: The Arabinose is a type of sugar or saccharide ,it is further classified as monosaccharide . Glucose…
Q: Y [S] Fig. 12.2 Graph of Y against [S], at fixed protein concentration, where the binding shows…
A: Allosteric regulation is a mode of regulation of an enzyme or other protein. Allosteric activators…
Q: For 30 moles of glucose that is completely oxidized in the glycolysis down to the Krebs cycle, what…
A: Glycolysis occurs in the cytoplasm irrespective of the presence or absence of oxygen. Each molecule…
Q: The ribonucleotides C and G we're mixed together with C two times more abundant than G. The…
A: Introduction: The synthesis of a protein or a polypeptide chain in a living cell is known as…
Q: Show the reaction mechanism for the catabolism of proline.
A: Proline plays an important role in metabolism and is being recognised as an important amino acid in…
Q: A GRK inhibitor would have what effect on GPCR inactivation in the presence of a GPCR agonist? (a)…
A: Agonists are substances which mimic the activity of a ligand. The activation of the GPCR triggers a…
Q: why is energy released when IMFs form in between molecules as they approach eachther
A: In molecular terms, intermolecular forces are the forces of attraction and repulsion between…
Q: Briefly explain why (1) allosteric inhibition is an example of negative heterotropic cooperativity…
A: The term heterotropy refers to the enzyme activity in which the substrate binds to the enzyme at…
Q: Which of the following mechanisms ensure that the utilization of dietary nucleic acids is effected?…
A: Purine and pyrimidine biosynthesis occurs from the waste products of other metabolic pathways like…
Q: Pernicious anemia is not alleviated by dietary vitamin B12 O True O False
A: Pernicious anemia results into decreased count of red blood cells. It causes weakened stomach lining…
Q: Sketch a plot that shows a typical binding curve for the interactions between a ligand, L (in terms…
A: The interactions that lie between a protein and a ligand is classified as reversible as well as…
Q: Reducing power for the synthesis of fatty acids is produced in which reactions? conversion of…
A: The fatty acid synthesis starts from acetyl Co-A which is an intermediate of the TCA cycle. The…
Q: Type I diabetes is caused by autoimmune destruction of the pancreatic beta cells True O False
A: Diabetes is a very common disease in the world. It is associated with metabolism of glucose. It can…
Q: Explain the biochemical basis of diarrhea.
A: Diarrhea is abnormally loose or watery stool, more-frequently associated with altered bowel…
Q: Select all examples of functions of the parasympathetic nervous system. slows heart rate stimulates…
A: The autonomic nervous system includes the sympathetic and parasympathetic nervous systems. The…
Q: Consider the mRNA sequence below. Assume that the following mRNA segment has been translated.…
A: The genetic code is a set of three-letter combinations of nucleotides called codons, each of which…
Q: 10. Identify if the substances below exhibit R/S configuration Br H H 1 2. C Br CHg ܕܕ1 CI C
A: Introduction: Absolute configuration in stereochemistry involves the arrangement of atoms or a group…
Q: Cancer stem cells (CSCs) are cancer cells (found within tumors or hematological cancers) that…
A: Cancer stem cells like normal stem possess the ability of self renewal with one problem: the cell…
Q: Name the given substance. What pharmacological group does it belong to? CI -OH
A: The answer to the above question is provided below.
Q: Which of the following is NOT a regulatory mechanism for digestion? Only carbohydrates are digested…
A: Introduction: The process by which our body breaks down food into small nutrient molecules is known…
Q: The free energy difference going from the unfolded state to the folded state in most proteins is…
A: The three dimensional structure of proteins ca b e destroyed by denaturating the protein. This…
Q: eals and whales have flippers and flukes that have no blubber and are very poorly insulated. How is…
A: Introduction: Thermal conductivity is the transfer of heat from one part of a body to another when…
Q: 11. State the effect of the following conditions to the yield of extracted glycogen (increase,…
A: Glycogen is a highly branched large polymer of glucose molecules. Glycogen is a branched polymer of…
Q: Please state if the statements are true or false. 1. A pyranose is a sugar in Haworth projection…
A: The answer is provided below.
Q: Ferritin is a blood plasma iron transport protein O True O False
A: Iron (Fe) is very important in our body as it acts as cofactor. When iron enters the cells of our…
Q: 18:3 omega-3 is an essential fatty acid O True O False
A: Animals cannot synthesize certain fatty acids & in order to survive such fatty acids must be…
Q: Modify isoleucine to show the predominant forms at pH 1, 7, and 13. Isoleucine has pK, values of 2.4…
A: Proteins are polymer of amino acids , and each of the amino acid residue is linked to its…
Q: Given the Ramachandran Plot below, identify the protein components that could adopt the phi-psi…
A: Ramchandran plot is a two dimensional plot used to visualize energetically allowed regions for…
Q: 60%-70% of bone composition
A: the inorganic composition bond means a chemical compound that does not have any C-H bond which means…
Q: Why is it important to drink water immediately after taking aspirin? How is the stomach wall…
A: Aspirin (acetylsalicylic acid or ASA) is a type of nonsteroidal anti-inflammatory medication…
Q: A heptapeptide was analyzed by Pinky. She reacted it with carboxypeptidase and found out that it…
A: A polypeptide is a sequence of amino acids that are linked to each other via peptide bonds. The bond…
Q: Part A If one molecule of glucose were to proceed through the citric acid cycle, how many molecules…
A: Glycolysis is the first step in catabolism of glucose. Glycolysis takes place in the cytosol and…
Q: feedback inhibition. Which step must be inhibited to regulate cholesterol synthesis?
A: The question is about the biomolecule synthesis, i.e cholesterol. What are the steps required for…
Q: Consider a 17:0 fatty acid in a mammalian cell where propionyl CoA is completely oxidized. For each…
A: β-oxidation of fatty acid occurs in mitochondria. Before β- oxidation, activation of fatty…
Q: For each fatty acid given, determine the following. Gross ATP from b-oxidation cycles Gross ATP…
A: Since you have posted a question with multiple subparts, we will solve the first three sub-parts for…
Q: Consider fatty acids from the hydrolysis of the given TAG in a liver cell where amino acid and…
A: Fatty acid oxidation is the process in which long chain fatty acids are converted into acetyl-CoA.…
Q: What is the mechanism for human get infected with the pathogen that causes giardiasis
A: Giardiasis is a common diarrheal disease that can be seen all over the world. The flagellate…
Q: How can you distinguish " Discontinued drugs " from " Drug shortages " ? Give an example where each…
A: Other than food, drugs are substances used to avoid, detect, treat, or relieve the symptoms and side…
Q: Please state if the statements are true or false. 1. A furanose is a sugar in the Haworth…
A: Carbohydrates, often known as sugar molecules, are a type of molecule. Carbohydrates are one of the…
Q: When comparing sugar sources HFCS and sucrose, current thinking about them is: O the two sources are…
A: Carbohydrates or carbs are maconutrient consisting of Carbon, hydrogen and oxygen atoms. In nature…
Q: surrounds a group of cells (each of bundle) forms a fascicle Epimysium Perimysium Endomysium O all…
A: Each skeletal muscle is a multi-tissue organ. Muscle fibres, blood vessels, nerve fibres, and…
Q: For the binding of a ligand to a protein, what is the relationship between the Ka (association…
A: The ligand in protein-ligand binding is typically a molecule that generates a message by connecting…
Q: Which of the following statements is incorrect? The rigidity of a saturated fatty acid is…
A: The biological macromolecules can be classified as nucleic acids, proteins, lipids and…
Q: Predict whether the entropy change of the system in each of the following is positive or negative.…
A: Introduction: Entropy is defined as the property of a system that measures the degree of disorder or…
Q: From the Lineweaver-Burke plot of an enzyme-catalyzed reaction containing 4 μM total enzyme, you…
A: Hi. Thank you for the question. As per the honor code, We'll answer the first question since the…
Q: Which is not belong to the group? a. vitamin d b. k c. e d. a
A: Vitamins are essential macromolecules that help in maintaining the health of individual and provides…
Q: Name the monomers for all the macromolecules in Test Tubes 1-5 in Jenny's experiment. Benedict's…
A: Living organisms are constituted of four types of biological macromolecules nucleic acids, proteins,…
Q: Discuss the principle behind Salkowski test, reaction with ammonium ferrothiocyanate, and…
A: Introduction: Lipids are defined as esters of alcohol and fatty acids which are water-insoluble and…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- The accelerating flow of _______ ions through gated channels across the membrane triggers an action potential. a. potassium b. sodium c. hydrogen d. a and bThe interior of a neuron's plasma membrane at resting membrane potential will have a positive charge and contains less sodium than outside of the cell positive charge and contains more sodium than outside the cell negative charge and contains less sodium than outside the cell O negative charge and contains more sodium than outside the cellThe above repolarization of a neuron will result in which of the following ionic currents? a potassium current will transport K+ ions out of the cytoplasm a sodium current will transport Na+ ions out of the cytoplasm a potassium current will transport K+ ions into the cytoplasm a sodium current will transport Na+ ions into the cytoplasm a sodium current will transport K+ ions into the cytoplasm
- Which of the following is not an excitatory ligand-gated ion channel? NACHR AMPAR ASIC GABA-ARWhich of these ions is actively transported through the cell membrane to re-establish a resting potential? K and Mg Na and K Mg and Cl Ca and ClWhen the membrane voltage shifts from the RMP to a more negative voltage; this is a depolarization repolarization hyperpolarization polarization
- The above depolarization of a neuron will result in which of the following ionic currents? a potassium current will transport K+ ions out of the cytoplasm a sodium current will transport Na+ ions out of the cytoplasm a potassium current will transport K+ ions into the cytoplasm a sodium current will transport K+ ions out of the cytoplasm E. a sodium current will transport Na+ ions into the cytoplasmCompare the resting membrane potential of a neuron with the potassium and sodium equilibrium potentials. Explain how this comparison relates to the relative permeabilities of the resting plasma membrane to these two ions.What events in a neuron membrane occur slowly when threshold potential is reached? Opening of K+ channel activation gate Closing of Na+ channel inactivation gate Opening of the Na+ voltage-gated channel activation gate Closing of Cl- voltage gated channels Closing of K+ inactivation gate (More than one answer may be correct, please help in answering)
- Which of the following are TRUE, when describing the Action Potential of a Non- Contractile Cardiac Pacemaker cell? Select ALL that are true. O Resting membrane potential is more polarized than in neurons, because of more Leakage channels for K+. Progressive Na+ channel (the "funny current", iNa) opening, activates a Transient Voltage Sensitive (T-type) Ca++ channel. Together these channels depolarize the membrane and activate Voltage-Sensitive Long-acting (L-Type) Ca++ channel. The resulting depolarization, closes the "funny" current and T-type Ca++ channels. O Action Potential depolarization, resulting from the Voltage-Activated Na+ channel, triggers Voltage-Sensitive Long-acting (L-Type) Ca++ channel. OMembrane depolarization triggers Voltage-Activated K+ channels (Delayed Rectifier) to open. Increasing K+ permeability and repolarizing the membrane. When the membrane polarizes to -60 mv, the Delayed Rectifier closes and a progressive Na+ channel (the "funny current", iNa) opens. The…Please ASAP. Thanku Ion Extracellular Concentration (mM) Intracellular Concentration (mM) Na+ 440 50 K+ 20 400 Cl- 560 52 Ca++ 10 1 If one increased the extracellular concentration of K+, what would happen to the membrane potential? Cannot predict becomes more negative No change becomes more positiveRepolarization occurs because Multiple Choice more sodium ions diffuse into the cell than potassium ions diffuse out of it. potassium ions continue to diffuse out of the cell after the inactivation gates of the voltage-gated sodium ion channels begin to close. the increased potassium ion permeability lasts slightly longer than the time required to bring the membrane potential back to its resting level. the extra efflux of potassium ions causes the membrane potential to become slightly more positive than the resting value. the inactivation gates of the voltage-gated sodium ion channels begin to open and the diffusion of sodium ions decreases.