science

Q.1 Cellular respiration is an exothermic reaction and photosynthesis is an endothermic reaction. How does the required activation energy compare for these two reactions?
1. Cellular respiration needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
2. Photosynthesis needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
3. Photosynthesis needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
4. Cellular respiration needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.

Q.2 How do enzymes affect chemical reactions?
1.They lower activation energy.
2.They provide activation energy.
3.They increase activation energy.
4.They eliminate activation energy.

Q.3 Which lists the correct order of steps involved in the formation of an enzyme-substrate complex?
1.enzyme-substrate complex forms > enzyme binds to substrate at active site > chemical reaction takes place > products are released
2.enzyme binds to substrate at active site > enzyme-substrate complex forms > chemical reaction takes
3.chemical reaction takes place > products are released > enzyme binds to substrate at active site > enzyme-substrate complex forms
4.enzyme binds to substrate at active site > chemical reaction takes place > products are released > enzyme-substrate complex forms

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  1. 1. 1. 2. your welcome :)

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  2. The Role of Enzymes Quick Check connexus
    Question 1
    A) 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)

    Photosynthesis needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.

    A.Photosynthesis needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.

    B. Cellular respiration needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.

    C. 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 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.
    Cellular respiration needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
    Question 2
    A) How do enzymes affect chemical reactions?(1 point)

    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.
    They lower activation energy.
    Question 3
    A) Which lists the correct order of steps involved in the formation of an enzyme-substrate complex?(1 point)

    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-substrate complex forms

    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

    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
    Question 4
    A) 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)

    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 activation energy needed for the chemical reaction will be lowered.
    The activation energy needed for the chemical reaction will be lowered.

    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 body will use a different enzyme to catalyze the chemical reaction.
    The body will use a different enzyme to catalyze the chemical reaction.
    Question 5
    A) How does temperature affect enzyme activity in a chemical reaction?(1 point)

    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 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 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 always decreases with increasing temperature and always increases with decreasing temperature.
    The rate of a chemical reaction always decreases with increasing temperature and always increases with decreasing temperature.

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  3. I've come to save the day!!!!
    Answer 1: C
    Answer 2: D
    Answer 3: C
    Answer 4: D
    Answer 5: B
    See you next time!!!!

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  4. Idk if these are correct but here's what I have 😓
    1. Cellular respiration needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
    2. They lower activation energy.
    3. enzyme binds to substrate at active site > enzyme-substrate complex forms > chemical reaction takes
    4. The activation energy needed for the chemical reaction will be lowered.
    5. The rate of a chemical reaction initially increases with increasing temperature and then decreases, eventually stopping, when the temperature gets too high.

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  5. OH MY BAD GUYS I JUST TURNED IT IN HERES THE ACTUAL ANSWERS
    1. C) Cellular respiration needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
    2. D) They lower activation energy.
    3. D) enzyme binds to substrate at active site > enzyme-substrate complex forms > chemical reaction takes
    4. C) The chemical reaction will not occur, and the body will not be able to absorb the protein it needs.
    5. B) The rate of a chemical reaction initially increases with increasing temperature and then decreases, eventually stopping, when the temperature gets too high.

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  6. please disregard my first post ty 😭🙏

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  7. Ahhh I just submittied it the moment you sent that correction, #4 was the only wrong one on your first post

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  8. Thank you tho its correct! :)

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  9. Jas is right!

    (On the second post)

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  10. 1. B
    2. A
    3. C
    4. B
    5. C

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  11. PLSS I GOT 1/5 HAPPENED 😟

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  12. it takes out w t f help

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  13. tbh its fine im gonna fail anyways i dont need biology to be a psychologist

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  14. thx jas for the 0/4

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