Question

Enzymes are protein catalysts. What is the role of a catalyst?
A. Provides extra energy for a reaction
B. Lowers the activation energy of a reaction
C. Allows only irreversible reactions to happen
D. Eliminates the activation energy of a reaction

Answer 1

Answer:

Lowers the activation energy of a reaction.

hope it helps ....

Answer 2

Answer:

ʙ. ʟᴏᴡᴇʀs ᴛʜᴇ ᴀᴄᴛɪᴠᴀᴛɪᴏɴ ᴇɴᴇʀɢʏ ᴏғ ᴀ ʀᴇᴀᴄᴛɪᴏɴ

Explanation:

ᴇɴᴢʏᴍᴇs ᴀʀᴇ ʙɪᴏʟᴏɢɪᴄᴀʟ ᴄᴀᴛᴀʟʏsᴛs. ᴄᴀᴛᴀʟʏsᴛs ʟᴏᴡᴇʀ ᴛʜᴇ ᴀᴄᴛɪᴠᴀᴛɪᴏɴ ᴇɴᴇʀɢʏ ғᴏʀ ʀᴇᴀᴄᴛɪᴏɴs. ᴛʜᴇ ʟᴏᴡᴇʀ ᴛʜᴇ ᴀᴄᴛɪᴠᴀᴛɪᴏɴ ᴇɴᴇʀɢʏ ғᴏʀ ᴀ ʀᴇᴀᴄᴛɪᴏɴ, ᴛʜᴇ ғᴀsᴛᴇʀ ᴛʜᴇ ʀᴀᴛᴇ. ᴛʜᴜs ᴇɴᴢʏᴍᴇs sᴘᴇᴇᴅ ᴜᴘ ʀᴇᴀᴄᴛɪᴏɴs ʙʏ ʟᴏᴡᴇʀɪɴɢ ᴀᴄᴛɪᴠᴀᴛɪᴏɴ ᴇɴᴇʀɢʏ.