Using lactate dehydrogenase as an example, explain why it istrue to say that “multiple molecular forms of enzymes occur at alllevels of animal organization.”
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Using lactate dehydrogenase as an example, explain why it is
true to say that “multiple molecular forms of enzymes occur at all
levels of animal organization.”
Step by step
Solved in 3 steps
- Formulate a conclusion based on the above-presented data. How doesthe amount of ONP produced (as detected by absorbance of ONP) differ from the activity of the enzyme over the time period studied? From these graphs formulate a sentence or two to make a conclusionregarding β-galactosidase activity relative to substrate concentration in thepresence or absence of lactose. Comment on the effect of lactose on the ONPGto-ONP reaction, and why these results are expected or not.Both prokaryotic and eukaryotic organisms carry out some form of glycolysis. How does ha fact support or not support the assertion that glycolysis is one of the oldest metabolic pathways?A prokaryotic species is facing a new environmental stressthat can be ameliorated by a catalytic activity that requiresthe side chain of a unique amino acid derivative called pyrovaline. How would such an organism develop a mechanism for the incorporation of this nonstandard amino acidinto an enzyme molecule? What would be the properties ofthe molecules required to solve this problem?
- Using the Acronym LILHOT, give the 6 major families of enzymes found in biological systemsPlease answer clearly and directly.Give 3 types of specificity of enzyme and an example for each. Example: Relative Specificty - α-amylase enzyme can hydrolyze α-1-4 glycosidic linkage in starch and glycogenWhy does the Krebs cycle operate only under aerobic conditionseven though it does not use molecular oxygen in any of its reactions?
- Draw the structures of the amino acids whose side chainsmost commonly participate in catalytic mechanisms whenthey occur in the active sites of enzymes.(a) amylase, (b) invertase, (c) endopeptidase Where would you find the above enzymes in the average mammal?Phosphorylation is a common covalent modification of proteins in all forms of life. What energetic advantages accrue from the use of ATP as the phosphoryl donor?
- Briefly describe why mammals can not convert fatty acids to carbohydrates? Why plants can do so? What are the secret weapons for plants to so? Briefly describe enzyme names and pathway? Based on this knowledge, what is your strategy to make a mouse is able to do so?When ATP and xylose are added to hexokinase, the enzyme produces a small amount of xylose-5-phosphate along with a large amount of ADP. How does this observation support the induced fit model?Mammalian phospholipid biosynthesis occur in the following order: Activated head group reacts with glycerol and the product with two fatty acyl-CoAs. True or False
