Which has more free energy: reactants or products?
What is the unit of chemical energy?
Why can we break down macromolecules?
What enzyme converts glucose to glucose 6 phosphate?
How is glucose broken down?
What is the process of synthesis of sugar molecules?
How can B. be oxidized?
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What starts a chemical reaction?
A chemical reaction is a process in which some substances change into different substances. Substances that start a chemical reaction are called reactants.
What is enzyme activation energy?
The activation energy is the energy required to start a reaction. Enzymes are proteins that bind to a molecule, or substrate, to modify it and lower the energy required to make it react. The rate of reaction is given by the Arrhenius equation. The rate of reaction increases if the activation energy decreases.
Which term is used to describe the energy needed for a chemical reaction to begin?
Activation Energy is the minimum amount of energy needed to start a chemical reaction. All chemical reactions need a certain amount of activation energy to get started.
What is needed for a chemical reaction to take place?
According to the modern view of chemical reactions, bonds between atoms in the reactants must be broken, and the atoms or pieces of molecules are reassembled into products by forming new bonds. Energy is absorbed to break bonds, and energy is evolved as bonds are made.
How does a catalyst work?
A catalyst is a substance that speeds up a chemical reaction, or lowers the temperature or pressure needed to start one, without itself being consumed during the reaction. Catalysis is the process of adding a catalyst to facilitate a reaction.
Where does the activation energy needed for chemical reactions in our bodies come from?
heat energyThe source of the activation energy needed to push reactions forward is typically heat energy from the surroundings. Heat energy (the total bond energy of reactants or products in a chemical reaction) speeds up the motion of molecules, increasing the frequency and force with which they collide.
What do we call the minimum energy required to initiate a chemical reaction quizlet?
activation energy is the minimum amount of energy needed to start a chemical reaction.
Which form of energy changes in chemical reactions do to bonds breaking and forming?
Chemical reactions that release energy are called exothermic. In exothermic reactions, more energy is released when the bonds are formed in the products than is used to break the bonds in the reactants. Exothermic reactions are accompanied by an increase in temperature of the reaction mixture.
Why is activation energy required to start some reactions?
Each and every chemical reaction require some amount of activation energy to begin. The activation energy enables the reactants to move and overcome forces of repulsion. The subsequent collisions between atoms facilitates the breaking of existing bonds and the formation of new ones.
What type of energy is chemical reaction?
chemical energy, Energy stored in the bonds of chemical compounds. Chemical energy may be released during a chemical reaction, often in the form of heat; such reactions are called exothermic.
What is required for a chemical reaction to occur quizlet?
What must happen with the reactants in order for a chemical reaction to occur? The particles must come in contact with each other and bond.
What is the best definition of activation energy?
Answer and Explanation: The best definition of activation energy is that activation energy is the energy required to bind a substrate to an active site (option C).
Why is activation energy important?
Summary. All chemical reactions, including exothermic reactions, need activation energy to get started. Activation energy is needed so reactants can move together, overcome forces of repulsion, and start breaking bonds.
Why is enzyme activation important?
The energy required to reach the transition state (the activation energy) constitutes a barrier to the progress of the reaction, limiting the rate of the reaction. Enzymes (and other catalysts) act by reducing the activation energy, thereby increasing the rate of reaction.
How does activation energy occur?
The source of activation energy is typically heat, with reactant molecules absorbing thermal energy from their surroundings.
Which has more free energy: reactants or products?
A. The reactants have more free energy than the products
What is the unit of chemical energy?
A calorie is the commonly used unit of chemical energy. It is also the unit of:
Why can we break down macromolecules?
A. We can break down these macromolecules to provide energy for the endergonic reactions in our bodies.
What enzyme converts glucose to glucose 6 phosphate?
Hexokinase is an enzyme that binds specifically to glucose and converts it into glucose 6-phosphate. The activity of hexokinase is suppressed by glucose 6-phosphate, which binds to hexokinase at a location that is distinct from the active site. This is an example of what?
How is glucose broken down?
Glucose is broken down through cellular respiration, which involves a large number of chemical reactions. At the end of the cellular respiration process, a large number of ATP molecules are generated, but yet, not all of the possible energy that is contained in a molecule of glucose can be harnessed through these chemical reactions to generate ATP. In other words, during cellular respiration, not all of the energy that is contained in a molecule of glucose is converted into the energy stored in ATP. What happened to the remaining energy?
What is the process of synthesis of sugar molecules?
The synthesis of sugar molecules through the process of photosynthesis requires energy absorbed from sunlight. Bearing this in mind, what kind of reaction is photosynthesis ?
How can B. be oxidized?
B. can be oxidized by accepting electrons.
Which has more free energy: reactants or products?
A. The reactants have more free energy than the products
What is the unit of chemical energy?
A calorie is the commonly used unit of chemical energy. It is also the unit of:
Why can we break down macromolecules?
A. We can break down these macromolecules to provide energy for the endergonic reactions in our bodies.
What enzyme converts glucose to glucose 6 phosphate?
Hexokinase is an enzyme that binds specifically to glucose and converts it into glucose 6-phosphate. The activity of hexokinase is suppressed by glucose 6-phosphate, which binds to hexokinase at a location that is distinct from the active site. This is an example of what?
How is glucose broken down?
Glucose is broken down through cellular respiration, which involves a large number of chemical reactions. At the end of the cellular respiration process, a large number of ATP molecules are generated, but yet, not all of the possible energy that is contained in a molecule of glucose can be harnessed through these chemical reactions to generate ATP. In other words, during cellular respiration, not all of the energy that is contained in a molecule of glucose is converted into the energy stored in ATP. What happened to the remaining energy?
What is the process of synthesis of sugar molecules?
The synthesis of sugar molecules through the process of photosynthesis requires energy absorbed from sunlight. Bearing this in mind, what kind of reaction is photosynthesis ?
How can B. be oxidized?
B. can be oxidized by accepting electrons.