Which five statements about hemoglobin and myoglobin structure are true?Each iron atom can form six coordination bonds. Two of these bonds are formed between iron and oxygen.Molecular oxygen binds reversibly to Fe²+ in heme.Heme is composed of an organic protoporphyrin component and a metal atom.By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent oxidation of theiron atom.Each hemoglobin or myoglobin molecule can bind four oxygen molecules.Hemoglobin is a heterotetramer, whereas myoglobin is a monomer.Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron atom.

The five true statements about hemoglobin and myoglobin structure are:Each iron atom can form six…

Answered: Which five statements about hemoglobin…

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter11: The Blood

Section: Chapter Questions

Problem 1SQE

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Similar questions

In some metalloproteins such as haemoglobin and some metalloenzymes, the Fe2+ metal is not bound to the amino acid side-chains of the protien,but to a prophrin ring called a heme prosthetic group. How does the heme coordinate to the iron?
Allosteric inhibitors of hemoglobin will decrease enzyme activity (oxygen binding) through which of the following mechanisms? Binding the enzyme in "T" conformation and displacing an activator Binding the enzyme and enhancing the Vmax Binding the enzyme, and keeping it in the "R" conformation Binding the enzyme, and keeping it in the "T" conformation
Fructose is a labeled on its anomeric carbon with 14C. This labeled fructose is added to muscle cells under anaerobic glycolytic conditions, and the secreted lactate is collected. Which carbon in the secreted lactate (shown below) contains the 14C label? دیده OH Carbon 2 Carbon 1 Carbon 3 No carbon contains the label.
is the structure glycerophospolipid or sphingophospolipid?
You need to resuspend lyophilized protein in a solution of 5mM HEPES with 20% glycerol. Describe how you would make 1mL of this solution. HINT: you can make a greater volume of 5mM HEPES.
glycerol Lecithins and cephalins are both ; they consist of with fatty acids forming groups. The third phosphoester bonds with the first and second forms a with phosphoric acid, which glycerophospholipids group of the forms another bond with an amino alcohol. In lecithins, the amino alcohol is ester ; in cephalins, the amino alcohol is usually choline amino sphingosine sphingolipids ethanolamine hydroxyl amide
Pinolenic acid is an unsaturated fatty acid that is obtained from Siberian pine nuts, Korean pine nuts, and the seeds of other pines. H-C CH2-CH2-CH2-COOH C-CH Part: 0 / 2 Part 1 of 2 H CH, H H C=C H-C H C-CH2 CH2-CH2-CH2-CH2-CH3 When this fatty acid is partially hydrogenated with one equivalent of H2 in the presence of a Pd catalyst, a mixture of constitutional isomers is formed. Modify the given structure to draw one of these possible products.
In hemoglobin from patients with sickle cell anemia, the hemoglobin ß-chains have a single amino substitution that results in: A) A sticky spot in the hemoglobin causing polymerization O B) A change in the oxygen binding to hemoglobin that causes formation of polymers C) Changes in the interaction between B-chains and x-chains OD) Changes in binding of 2,3-bisphosphoglycerate
Hemoglobin glycation (so named to distinguish it from glycosylation, which is the enzymatic transfer of glucose to a protein) is a non-enzymatic process that involves reaction of the N-terminal amino group of hemoglobin and glucose. The amount of glycated hemoglobin (GHB) is usually about 5% of total hemoglobin (and corresponds to a blood glucose concentration of 120 mg/100 mL). However, in people with untreated diabetes this value may be as high as 13%, which indicates an average blood level of about 300 mg/100 mL -dangerously high. One of the aims of insulin therapy is to maintain GHB values of about 7%. Draw a possible chemical scheme for the glycation of hemoglobin.
Which of thse molecules is most reduced? Which is most oxidized? CH4, COH4, COH2, or CO2H2
How many FAD molecules are reduced during cellular respiration? -4 -2 -6 -10
On the right is a diagram of plasma concentration of three metabolites: glucose, B- hydroxybutyrate, and free fatty acid of an experimental animal over weeks of starvation. 4. (a) Label the lines with the names of the three metabolites. Yellow: Red: 10 20 30 40 Blue: Days of starvation (b) What factor in the plasma binds to and transports free fatty acid (c) Where was B-hydroxybutyrate produced? Why it is produced? What are the purposes of producing it (d) How B-hydroxybutyrate is used as fuel in extrahepatic cells? Write down the reactions, enzymes, and cofactors (No need to elaborate on the TCA cycle). (e) How many ATP molecules or equivalent are generated after complete oxidation of one molecule of B-hydroxybutyrate? Show your calculations. Hint: You need to consider ATP consumption for bypassed steps that may normally yield or consume AT Plasma concentration (mM)

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