Cellular respiration is an exothermic reaction and photosynthesis is an endothermic reaction. How does the required activation energy compare for these two reactions?(1 point) Responses Cellular respiration needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants. Cellular respiration needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants. Photosynthesis needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants. Photosynthesis needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants. Photosynthesis needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants. Photosynthesis needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants. Cellular respiration needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
They lower activation energy.
enzyme binds to substrate at active site > enzyme-substrate complex forms > chemical reaction takes place > products are released
The chemical reaction will not occur, and the body will not be able to absorb the protein it needs.
The rate of a chemical reaction initially increases with increasing temperature and then decreases, eventually stopping, when the temperature gets too high.
How do enzymes affect chemical reactions?(1 point) Responses They eliminate activation energy. They eliminate activation energy. They increase activation energy. They increase activation energy. They provide activation energy. They provide activation energy. They lower activation energy.
Which lists the correct order of steps involved in the formation of an enzyme-substrate complex?(1 point) Responses chemical reaction takes place > products are released > enzyme binds to substrate at active site > enzyme-substrate complex forms chemical reaction takes place > products are released > enzyme binds to substrate at active site > enzyme-substrate complex forms enzyme-substrate complex forms > enzyme binds to substrate at active site > chemical reaction takes place > products are released enzyme-substrate complex forms > enzyme binds to substrate at active site > chemical reaction takes place > products are released enzyme binds to substrate at active site > enzyme-substrate complex forms > chemical reaction takes enzyme binds to substrate at active site > enzyme-substrate complex forms > chemical reaction takes enzyme binds to substrate at active site > chemical reaction takes place > products are released > enzyme-substrate complex forms
Protease is an enzyme in the human body that catalyzes a chemical reaction in which proteins are broken down into smaller molecules so that the body can use them. Which is a likely outcome if protease does not function properly?(1 point) Responses The chemical reaction will not occur, and the body will not be able to absorb the protein it needs. The chemical reaction will not occur, and the body will not be able to absorb the protein it needs. The cells of the digestive system will increase in temperature and catalyze the reaction. The cells of the digestive system will increase in temperature and catalyze the reaction. The activation energy needed for the chemical reaction will be lowered. The activation energy needed for the chemical reaction will be lowered. The body will use a different enzyme to catalyze the chemical reaction.
The Role of Enzymes Quick Check 5 of 55 of 5 Items Question How does temperature affect enzyme activity in a chemical reaction?(1 point) Responses The rate of a chemical reaction initially increases with decreasing temperature and then decreases, eventually stopping, when the temperature gets too low. The rate of a chemical reaction initially increases with decreasing temperature and then decreases, eventually stopping, when the temperature gets too low. The rate of a chemical reaction initially increases with increasing temperature and then decreases, eventually stopping, when the temperature gets too high. The rate of a chemical reaction initially increases with increasing temperature and then decreases, eventually stopping, when the temperature gets too high. The rate of a chemical reaction initially increases with increasing temperature and continues to increase indefinitely as temperature continues to increase. The rate of a chemical reaction initially increases with increasing temperature and continues to increase indefinitely as temperature continues to increase. The rate of a chemical reaction always decreases with increasing temperature and always increases with decreasing temperature.
Photosynthesis needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Explanation: Activation energy is the energy required to initiate a chemical reaction. In photosynthesis, plants use energy from sunlight to convert carbon dioxide and water into glucose and oxygen. This process is endothermic, meaning it requires energy input. During photosynthesis, the reactants (carbon dioxide and water) have a higher energy state than the products (glucose and oxygen). To overcome this energy difference and proceed with the reaction, a higher amount of activation energy is required.
On the other hand, cellular respiration is the process by which organisms convert glucose and oxygen into carbon dioxide, water, and energy in the form of ATP. This process is exothermic, meaning it releases energy. The reactants (glucose and oxygen) have a higher energy state than the products (carbon dioxide, water, and ATP). Therefore, the reaction releases energy, and a smaller amount of activation energy is required to initiate cellular respiration compared to photosynthesis.