15 Questions
Explain the catalytic power and specificity of enzymes.
Enzymes exhibit immense catalytic power, accelerating reactions at least a million times, and specificity by binding reactants at the active site.
What is the role of enzymes in reducing the energy of activation in chemical reactions?
Enzymes lower activation energy by bringing reactants together, binding them at the active site, and positioning them correctly to interact with less energy.
Define substrates in the context of enzymatic reactions.
Substrates are the substances on which enzymes act to convert them into products in enzymatic reactions.
How do enzymes contribute to the regulation of biological systems?
Enzymes contribute to the regulation of biological systems through strict regulation and by binding reactants at the active site.
What is the significance of the active site in enzyme-catalyzed reactions?
The active site is where enzymes bind both reactant molecules (substrates) tightly and specifically, and position the reactants correctly to lower the energy needed for them to come together and react.
Enzymes are considered as biocatalysts because they are _______ in nature
protein
Enzymes act on substances called _______ to convert them into products
substrates
Enzymes accelerate reactions by reducing the energy of _______
activation
Enzymes bind both reactant molecules, called the _______ tightly and specifically at the active site
substrate
Enzymes position reactants correctly at the active site, allowing them to interact with less _______
energy
What are the main sources from which animals derive energy in animal nutrition?
Carbohydrates, fats, and proteins ingested and absorbed from the diet or from breakdown of glycogen, fat, or protein absorbed in the body.
What is the significance of gross energy (GE) in evaluating energy utilization from feedstuffs?
It is the amount of heat resulting from the complete oxidation of a food, and its values are used in the process of evaluating energy utilization.
Why is the analysis of fecal and feed energy important in calculating digestible energy (DE)?
It allows for the calculation of the consumed portion of energy minus the fecal energy, which represents digestible energy (DE).
What are the various energy requirements of animals mentioned in the text?
Energy for maintenance, work, growth, fattening, pregnancy, and lactation.
What are the different categories of energy losses mentioned in the text?
Fecal energy, urine energy, methane energy, and heat increment.
Test your knowledge about the chemistry of enzymes, the catalysts of biological systems. Explore the characteristics, regulation, and catalytic activity of enzymes.
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