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In the isolation of glycogen from liver, why it is necessary to filter the solution while it is still hot? Explain in 1-3 sentences
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- Many people who are lactose intolerant can eat yogurt, which is prepared from milk curdled by bacteria, without any digestive problems. Give a reason why this is possible. (Hint: Read the label on each of several yogurt containers. Do the ingredients make a difference?)Why is maltose reduced to Benedict's solution and fermented by yeast?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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- What enzyme will not be used if the oxidative portion of the pentose phosphate pathway is operating to produce ribose 5-phosphate? a) Transaldolase b) Ribulose 5-phosphate isomeraseWhat function of liver involves the conjugation of bilirubin?Why are high-density lipoproteins (HDLs) considered beneficial?