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(a)
Interpretation:
The total amount of
Concept introduction:
Proteins are the
(b)
Interpretation:
The ratio of oxygen that is bound to myoglobin to that directly dissolved in the water of sperm whale muscle is to be stated.
Concept introduction:
Proteins are the biomolecules which are composed of the long chain of amino acid residues. The protein that is an oxygen and iron containing protein present in the muscle tissue of mammals is known as myoglobin.
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Chapter 7 Solutions
BIOCHEMISTRY-ACHIEVE (1 TERM)
- Less energetic electrons. Why are electrons carried by FADH2FADH2 not as energy rich as those carried by NADH? What is the consequence of this difference?arrow_forwardNo free lunch. Explain why maintaining a high concentration of CO2 CO2 in the bundle-sheath cells of C4C4 plants is an example of active transport. How much ATP is required per CO2CO2 to maintain a high concentration of CO2CO2 in the bundle-sheath cells of C4C4 plants?arrow_forwardLess energetic electrons. Why are electrons carried by FADH 2 not as energy rich as those carried by NADH? What is the consequence of this difference?arrow_forward
- ROS, not ROUS. What are the reactive oxygen species and why are they especially dangerous to cells?arrow_forwardSources of Glucose during Starvation. The typical human adult uses about 160 g of glucose per day, 120 g of which is used by the brain. The available reserve of glucose (~20 g of circulating glucose and ~190 g of glycogen) is adequate for about one day. After the reserve has been depleted during starvation, how would the body obtain more glucose?arrow_forwardThe Cori Cycle. Before vigorous exercise (at rest) the level of blood lactate is at its normal level (about 25 mM). During a 400 m sprint, the value rises sharply in less than a few minutes to about 200 mM and then declines slowly to around 40 mM over 60 mins after the sprint. a. Discuss (or illustrate) the pathway and reactions that cause the rapid increase in lactate concentration during the sprint. b. What causes the slow decline in lactate concentration after the sprint? Why does the decrease occur more slowly than the rapid increase? c. What enzymatic reaction is responsible for maintaining the lactate concentration above zero at recovery after the sprint?arrow_forward
- Not sure about both. Please helparrow_forwardIonization State of Histidine.Each ionizable group of an amino acid can exist in one of two states, charged or neutral. The electric charge on the functional group is determined by the relationship between its pKa and the pH of the solution. This relationship is described by the Henderson-Hasselbalch equation. 1.Histidine has three ionizable functional groups. Write the equilibrium equations for its three ion-izationsand assign the proper pKa for each ionization. Draw the structure of histidine in each ionization state.What is the net charge on the histidine molecule in each ionization state? 2.Which structure drawn in (1) corresponds to theionization state of histidine at pH 1, 4, 8, and12?Note that the ionization state can be approximated by treating each ionizable group independently. 3.What is the net charge of histidine at pH 1, 4, 8, and 12? For each pH, will histidine migrate to-ward the anode (+) or cathode (-) when placed in an electric field?arrow_forwardFo-F1 ATPase. The energy for ATP synthesis from ADP and Pi is provided by the downhill transport of protons through the rotary FoF1 ATP synthase (lecture 22). The enzyme has 3 a-b and 12 ‘c’ subunits. The mitochondrion maintains Df=180 mV (negative inside), pHin = 8, pHout=7, [Pi] = 3 mM and ADP is present as well. How much energy is available (from the proton electrochemical gradient) for ATP synthesis under these conditions (in kJ/mol)? What [ATP]/[ADP] ratio will be established at steady-state under these conditions? What would be the [ATP]/[ADP] ratio if the enzyme had only 9 ‘c’ subunits? Remember that full revolution of the crank (gamma subunit) produces 3 ATP.arrow_forward
- No plagiarism please. Use your own words. Thanks. Discuss the preferred locations of different classes of amino acids in transmembrane proteins. Explain the formation of thioether-linked prenyl anchor proteins. Explain the structure of caveolae.arrow_forwardATP yield. Each of the following molecules is processed by glycolysis to lactate. How much ATP is generated from each molecule?arrow_forwardCrohn’s disease. Omega-3 fatty acids have been tested asa means to prevent relapse of Crohn’s disease. Two large,randomized, placebo-controlled studies have shown nosuch benefit from omega-3 fatty acids. Suppose you areasked to design an experiment to further study this claim.Imagine that you have collected data on Crohn’s relapsesin subjects who have used these omega-3 fatty acids and similar subjects who have not used them and that you canmeasure incidences of relapse for these subjects. Statethe null and alternative hypotheses you would use in yourstudy.arrow_forward
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