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

OH MY BAD GUYS I JUST TURNED IT IN HERES THE ACTUAL ANSWERS LMAO

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.

please disregard my first post ty 😭🙏

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

Thank you tho its correct! :)

Jas is right!

(On the second post)

PLSS I GOT 1/5 WTF HAPPENED 😟

it takes out w t f help

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

thx jas for the 0/4

They change up the answers. you cant just put the letter grades in, you have to type in the answers as they're written.