Enzyme Review

Identify what is labeled with the letter D

• active site

• enzyme

• substrate

• products

Enzymes have an area where reactants called substrates can be brought together in an enzyme-catalyzed reaction. This area on the enzyme is called the

• enzyme substrate complex.
• reaction site.
• active site.
• lock and key.

What makes an enzyme specific?

• Size
• Shape
• Name
• Location it is found in

Enzymes need certain environmental conditions in order to function properly.  What happens when enzymes are heated to a high temperature?

• they die
• they denature
• they change their amino acid sequence
• they work better

What effect do low temperatures have on enzymatic activity? 

• Low temperatures denature enzymes and slows reactions
• Low temperatures change the structure of substrates and slow reactions
• Low temperatures means molecules are moving slower and so reaction rate is low
• Enzymes work best at low temperatures

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What is the primary role of enzymes inside of living cells? 

• store genetic information
• store energy
• they help fight infections
• speed up chemical reactions 

Based on their role in the cell, enzymes can also be classified as –

• inhibitors
• catalysts
• sources of energy
• vitamins

Enzymes are composed of which of the following monomers? 

• amino acids
• proteins
• nucleotides
• monosaccharides

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Enzymes are able to speed up chemical reactions because they - 

• increase the temperature inside the cell
• reduce the friction between the reactants
• make the raw materials more chemically reactive
• lower the activation energy of the reaction

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NGSS.HS-PS1-5

NGSS.HS-PS1-4

The role of enzymes in the cell is best summarized by which of the following statements?

• Enzymes control the rate and process of chemical reactions in our body by helping break and form chemical bonds

• Enzymes carry the genetic information needed for our cells to function.

• Enzymes send electrical signals through the bodies of multicellular organisms.

• Enzymes are the main energy storage molecules within our cells.