Enzymes and ATP

What is the function of an enzyme?

• speed up chemical reactions

• slow down chemical reactions

• raise the activation energy

• reduce number of chemical reactions in the cell

What 3 letters do enzyme names typically end in?

• -ose

• -ese

• -ase

• -tic

After the enzyme binds to the substrate and performs the chemical reaction, what happens to the substrate?

• substrate is unchanged

• becomes product(s)

• remains attached to the enzyme

• becomes an enzyme also

In the diagram, what is letter A?

• substrate(s)

• active site

• enzyme-substrate complex

• product(s)

• enzyme

In the diagram, what is letter C?

• substrate(s)

• active site

• enzyme-substrate complex

• product(s)

• enzyme

In the diagram, what is letter D?

• substrate(s)

• active site

• enzyme-substrate complex

• product(s)

• enzyme

Enzymes provide a site where reactants can be brought together in an enzyme-catalyzed reaction. What is this site?

• reaction site

• active site

• inactive site

• allosteric site

What happens when an enzyme is heated to a high temperature?

• nothing happens

• the enzyme becomes more efficient

• the enzyme's amino acid sequence changes

• the enzyme is denatured

Which of these factors can denature an enzyme?

• substrate concentration

• temperature

• pH

• presence of inhibitor molecules

• light intensity

Receptor site on an enzyme where another molecule can bind, changing the shape of the enzyme; temporarily inactivating it...

• active site

• allosteric site

• product site

• denaturation site