10 What is the function of a catalyst ANS With a catalyst reactions occur

10 what is the function of a catalyst ans with a

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10. What is the function of a catalyst. ANS: - With a catalyst, reactions occur faster and with less energy because catalysts are not consumed, they are recycled. Often only tiny amounts are required. 11. What affects the functioning of an enzyme? ANS: - Several factors affect the rate at which enzymatic reactions proceed - temperature, pH, enzyme concentration, substrate concentration, and the presence of any inhibitors or activators. 12. What is the definition of energy? ANS: - The capacity to do work or cause change. 13. What is the definition of potential energy? ANS: - Energy by position or state. 14. What is the definition of kinetic energy? ANS: - Energy in motion or at work. 15. What is the definition of free energy? ANS: - The portion of energy available to do work in a system. 16. What is the 1 st Law of Thermodynamics? ANS: - The 1st Law of Thermodynamics states that “energy is neither created nor destroyed. Energy can be changed from one form to another.” This means that living things can not make their own energy; it must be derived from the environment. 17. What is the 2 nd Laws of Thermodynamics? ANS: - The 2nd Law of Thermodynamics states that “all systems tend toward disorder (entropy) (S). Every energy transfer or transformation increases the randomness of the universe. Living systems must use energy from the environment to maintain order.”
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18. What is mass? ANS: - Mass is a measure of the number of atoms in an object combined with the density of those atoms . 19. What is an endergonic reaction? ANS: - A reaction in which the reactants contain less energy than the products, thus energy is absorbed from the environment by the reaction. 20. What is an exergonic reaction? ANS: - A reaction in which the reactants contain more energy than the products, thus energy is released to the environment by the reaction. 21. What is metabolism? ANS – Metabolism is the sum of all chemical activity. 22. What is an anabolic reaction? ANS: - Build more complex molecules. 23. What is a catabolic reaction? ANS: - Break down molecules. 24. What is “free energy”? ANS: - Free Energy can be defined as the portion of energy available to do work in a system. 25. What is Entropy? ANS: - A thermodynamic quantity representing the unavailability of a system's thermal energy for conversion into mechanical work, often interpreted as the degree of -- disorder or randomness in the system. 26. What is the “Energy of Activation”? ANS: - Activation energy may also be defined as the minimum energy required to start a chemical reaction. The activation energy of a reaction is usually denoted by Ea and given in units of kilojoules per mole. 27. What are the 4 biomolecules? a) Carbohydrates b) Lipid c) Proteins d) Nucleic Acid
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28.What are the functions of the biomolecules? a) Carbohydrates are the starches and sugars that bodies use for energy. b) Brains, for example, consume large amounts of glucose (a component of many carbohydrates) with consumption rising in areas of the brain that are the most active.
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