Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Enzymes!
| Question | Answer |
|---|---|
| Enzymes work best at certain ________ values. | pH |
| A substance that speeds up the rate of chemical reactions. | Catalyst |
| Get energy from sun: | Plants |
| Chemical reactions always involve changes in chemical _________ that join ______ in compounds. | Bonds, Atoms |
| Chemical reactions that release energy often occur ______________ | Spontaneously |
| Because __________ and energy are conserved in chemical reactions, every organism must have a source of __________ to carry out chemical ____________. | matter, energy, reactions |
| Catalysts work by: | lowering a reaction's activation energy. |
| For a chemical reaction to take place, the | reactants must collide with enough energy so that existing bonds will be broken and new bonds formed. |
| The reactants of enzyme catalyzed reactions | Substrates |
| Get energy from consuming plants or other _______ | animals |
| Chemical reactions that absorb energy will not occur without a ______________ of energy. | source |
| Activation energy is a _________ in whether the overall chemical reaction releases energy, or _________ energy | factor, absorbs |
| In order to stay alive, organisms need to | carry out reactions that require energy. |
| Enzymes (speed up/slow down) chemical reactions that take place in cells. | Speed up |
| Energy is ____________ or ___________ whenever chemical bonds form or are _________. | released, absorbed, broken |
| the elements or compounds that that enter into a chemical reaction | Reactants |
| Enzymes provide a __________ where reactants can be brought together to react, reducing the ________ needed for reaction. | site, energy |
| The elements or compounds produced by a chemical reaction. | Products |
| A chemical reaction is a process that: | changes one set of chemicals into another set of chemicals. |
| The fit is so precise that the active site and substrates are often compared to a | lock and key |
| The products of the reaction are _______ and the __________ is free to start the process over again. | eleased, enzyme |
| Enzymes can be affected by any _______________ that influences a chemical reaction. | variable |
| The energy that is needed to get a reaction started | Activation energy |
| _________ are the proteins that allow brain cell to net work and to communicate | Enzymes |
Created by:
ckay
Popular Biology sets