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Enzymes AS
| Question | Answer |
|---|---|
| Enzymes are a type of | catalyst |
| Ribosomes produce specific enzymes to act on specific substances, called | Substrates |
| Most enzymes have a surface with one or more deep folds. The folds make pockets, which are called | Active Sites |
| An enzyme’s shape is key to how the enzyme | functions |
| Enzymes work by | decreasing the amount of energy needed to activate the chemical reaction. |
| Enzymes are | substances that cause chemical reactions to occur faster. |
| without enzymes catalyzing metabolic reactions | cells would not be able to perform metabolism quickly enough to support life. |
| Most enzymes are | proteins |
| enzymes are produced by a cell’s | ribosomes |
| Enzymes are also important for the | the synthesis of new molecules |
| The _______ of an enzyme determines how it works | shape |
| RNA polymerase is an enzyme that is essential to the process of | transcription |
| Molecules of mRNA are transcribed by RNA polymerases and later new protein molecules are synthesized based on the instructions coded in the | mRNA |
| All cells in multicellular organisms contain thousands of different kinds of enzymes that are specialized to catalyze different chemical reactions. Given this information, which of the following is most likely to be true? | All cells do not contain the same types of enzymes. |
| Each enzyme produced by the body is | specific—meaning it is only able to catalyze a reaction with a certain molecule. |
| Suppose that enzyme X catalyzes a reaction that involves the breakdown of a molecule. The product of this reaction is an amino acid. What molecule is the enzyme breaking down? | a protein |
| A biochemist is attempting to replicate a chemical reaction that commonly takes place in cells. During the chemical reaction, starch is broken down into glucose. What will most likely happen if the biochemist adds an enzyme to the reactants? | The reaction will speed up. |
| Which of the following would most likely happen if a person's body stopped producing carbonic anhydrase? | The blood's acidity would increase and become toxic. |
| The darker parts occur on the cooler parts of the cat's body because the enzyme that catalyzes the formation of the dark pigment is more active when cool. This example shows that enzymes are affected by . | temperature |
Created by:
Mr. Sneed
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