AP Biology Mid-Term Practice

Front

What is an atom's atomic mass?

Back

The mass of protons and neutrons it contains.

Front

What does an atom's atomic number represent?

Back

The number of protons it contains.

Front

What happens to enzymes when the temperature gets too high?

Back

Enzymes can denature (change shape).

Front

Which of the following is an enzyme?

Back

Amylase.

Front

Why does chlorophyll appear green?

Back

It reflects green light.

Front

What is the role of enzymes in chemical reactions?

Back

Enzymes speed up chemical reactions.

Front

What can cause enzymes to denature?

Back

Extreme pH and salinity.

Front

What is the difference between protons and neutrons?

Back

Protons are positively charged, while neutrons have no charge.

Front

What is the significance of the outermost shell of an atom?

Back

It determines the atom's chemical properties and reactivity.

Front

What is the relationship between atomic mass and isotopes?

Back

Isotopes have the same number of protons but different numbers of neutrons, affecting atomic mass.