Chemistry for Biology

Front

What is the role of enzymes in biochemical reactions?

Back

Enzymes speed up reactions by lowering the activation energy required for the reaction to occur.

Front

What property of water is indicated by the unequal sharing of electrons between hydrogen and oxygen?

Back

Water is polar.

Front

What suffix do most enzymes have?

Back

-ase

Front

What type of bond occurs when atoms share electrons evenly?

Back

Nonpolar covalent bond.

Front

What is the characteristic of a molecule that shares electrons evenly?

Back

It is nonpolar.

Front

Define activation energy in the context of chemical reactions.

Back

Activation energy is the minimum energy required for a chemical reaction to occur.

Front

What is a polar molecule?

Back

A polar molecule has a partial positive charge on one side and a partial negative charge on the other due to unequal sharing of electrons.

Front

What is the difference between polar and nonpolar covalent bonds?

Back

Polar covalent bonds involve unequal sharing of electrons, while nonpolar covalent bonds involve equal sharing.

Front

How do temperature and pH affect enzyme activity?

Back

Enzymes have optimal temperature and pH ranges; deviations can reduce their activity or denature them.

Front

What is the significance of the active site in an enzyme?

Back

The active site is the region on the enzyme where substrate molecules bind and undergo a chemical reaction.