Which three mammalian enzymes can potentially react with and thereby decrease the concentration of free NH4+ ?

Q: Write a balanced equation for the synthesis of TMP from dUMP that is coupled to the conversion of…

A: Biomolecules are organic molecules that occur in living systems. Biomolecules include carbohydrates,…

Q: Write schematically the synthesis of phosphatidylcholine from phosphatidylethanolamine. What…

A: Lipids are chemically diverse group that have two things in common: low solubility in water and high…

Q: Red blood cells synthesize and degrade 2,3-biphosphogylerate (2,3-BPG) as a detour from the…

A: In glycolysis, a 6-carbon molecule of glucose-6-phosphate is broken down into 3-carbon pyruvate. It…

Q: Which of the following about adenosine triphosphate (ATP) is FALSE?   A)   There are two…

A: Introduction :- Phosphoanhydride bonds are high-energy bonds between phosphates in which a phosphate…

Q: Before myristic acid (14:0) can be oxidized to carbon dioxide and water, it must first:

A: Fatty acid catabolism involves beta oxidation followed by metabolism of the Acetyl CoA molecules…

Q: TPCK and TLCK are irreversible inhibitors of serine proteases. One ofthese inhibits trypsin and the…

A: Both are irreversible inhibitors.

Q: Outline the flow of electrons from succinate to Ubiquinone through complex 2:

A: Complex 2 of the electron transport chain is a complex which does not pump any protons. Complex 2 is…

Q: Myoglobin stores O2 in muscle tissue to be used by the mitochondria only when the cell is in oxygen…

A: Haemoglobin is the oxygen carrying and iron containing protein present in the RBCs (Red Blood Cells)…

Q: Metformin is a commonly used treatment for type 2 diabetes. The active compound was isolated from…

A: Metformin primarily lowers blood glucose levels by reducing liver glucose production, improving…

Q: What is the difference between non-competitive or allosteric modes of inhibition for the compounds…

A: Hi! As you have posted multiple questions, I will be answering the first question for you. If you…

Q: during one of the first steps of gluconeogenesis oxaloacetate is converted to phosphoenolpyruvate.…

A: Gluconeogenesis constitutes a metabolic route leading to the production of glucose from carbon…

Q: What is a justification for a hypothesis stating that copper ion is the necessary cofactor in the…

A: There are various lines of observational data that may be used to support the claim that the copper…

Q: Draw a non-enzymatic mechanism to describe the formation of the imine between retinal and lysine.…

A: Retinal absorbs a photon and this leads to a conformation change. This leads to the formation of an…

Q: Explain briefly why ammonia toxicity can result from the consumption of an arginine-deficient diet.…

A: Ammonia is the metabolic waste of protein metabolism. Excessive ammonia is toxic to the human body;…

Q: The enzyme dihydrofolate reductase (DHFR) normallL can be imported into mitochondria by appending a…

A: This is because methotrexate acts as a competitive inhibitors against the mitochondrial signal…

Q: Name three enzymes that are likely the source of bicarbonate ion that is involved with the formation…

A:

Q: Which of the following is NOT a REDOX reaction?   2Al(s) + 3CuSO4(aq) → Al2(SO4)3(aq) + 3Cu(s)…

A: Given,  2Al(s) + 3CuSO4(aq) → Al2(SO4)3(aq) + 3Cu(s)   Cl2(aq) + 2KBr(aq) → Br2(aq)…

Q: Chemical modifications of amino acids contribute to the diversity and function of proteins. For…

A: Chemical modifications of amino acids contribute to the diversity and function of proteins. Glutamic…

Q: Chambers and coworkers have reported [NAD+] and [NADH] concentrations in yeast mitochondria as 20 mM…

A: Gibbs free energy(∆G) is the amount of energy available to a system to do useful work. Standard…

Q: One of the molecules listed below is effective in reducing O2 affinity of human Hb in the absence of…

A: Hemoglobin is a globular protein, ie it is roughly spherical. It is a tetramer of two types of…

Q: In a metabolic pathway, succinate dehydrogenase catalyzes the conversion of succinate to fumarate.…

A: Enzymes are the proteinaceous structure that serves as catalyst. Characteristic features:-  I ) They…

Q: (a) mTORC1 is specifically activated by arginine. Describe the synthesis of arginine including pre-…

A: CELL EMATBOLISM : it is the set of chemical reactions that occur in living organisms in order to…

Q: What's the role of VDAC1 mitochondrial protein in human diseases?

A: Mitochondrial proteins are proteins present within the mitochondria of cells, including within the…

Q: Which of the following catalyzes the cutting of PIP2 into 2 moles of IP3 and diacylglycerol in cell…

A: Cell signaling is the process by which cells communicate with each other to coordinate various…

Q: 3) Histone deacetylases (HDACs) are zinc-dependent enzymes that catalyse the conversion of…

A: Histone deacetylase (HDAC) converts acetyllysine to lysine by removing acetyl group from lysine. The…

Q: Many phospholipase C enzymes contain pleckstrin homology (PH) domains.  What is the function of…

A: Pleckstrin homology (PH) spaces are commonly found in numerous phospholipase C (PLC) enzymes. These…

Q: Identify the following statements as true or false. If a statement is false, explain what is wrong…

A: Transition state: The transition state refers to the highest-energy state of a chemical reaction…

Q: Which of the following statements is CORRECT? A) Hexokinase IV is allosterically inhibited by…

A: Enzyme plays an important role in all the metabolic activities in our body. They themselves remain…

Q: The brain is fueled almost exclusively by glucose. Using this fact, would it be a good idea to…

A: Glucose-1-phosphatase belongs to the family of hydrolases. This enzyme removes a phosphate group…

Q: Which enzyme catalyzes the reaction?

A: Proteases are usually synthesized as a zymogen. They are activated by proteolytic cleavage by other…

Q: Dr Merrick is so excited to know the affinity constant Kd values for O2 binding to mammoth OBP and…

A: ANSWER;- It is given that the ka values of OBP and elephants Hb are the same at pH=7. Kd is the…

Q: Describe the mechanism of the nitrogenase complex in which N2 is converted to NH3.

A: Nitrogen fixation is the process in which N2 is converted into ammonia. This process occurs through…

Q: Signaling by tyrosine kinase receptors is generally associated with all of the following except: A)…

A: In contrast to G protein-coupled receptors where the cytosolic domain of the receptor is close to…

Q: The phosphorylation and oxidative decarboxylation of oxaloacetate by inorganic phosphate (Pi) to…

A: In biochemical processes, the energetics of reactions play a crucial role in determining their…

Q: Leghemoglobin is a globin protein found in the roots of Legume plants inoculated with Nitrogen…

A: Legemoglobin is an oxygen carrier which is found in leguminous plants. This has structural and…

Q: Which of the following is TRUE about cytochrome c protein? O As a part of the ETC chain, it changes…

A: Cytochrome c is a protein that is present on the mitochondrial intermembrane. It shuttles electrons…

Q: The authors in the abstract given above describe the mechanism for the activation of metallothionein…

A: Many heavy metals are toxic to humans. Certain proteins (like metallothionein) have the ability to…

Metabolic pathways

Metabolism is defined as the group of life-supporting, enzyme-mediated chemical reactions in organisms. A metabolic pathway is a set of these chemical reactions that involve anabolism (synthesis of complex biomolecules) and catabolism (breakdown of biomolecules into small molecules) that occur inside a cell. Metabolites are the reacting substances, products, and intermediate substances of an enzymatic process that are altered by a series of chemical events catalyzed by enzymes.