Chapter 5 Enzymes

How enzymes work?

Poll

What group of chemicals do enzymes belong to?

• Lipids

• Proteins

• Carbohydrates

• Fats

Poll

Why are enzymes important in living things?

• Enzymes are mainly needed for energy that is released by respiration.

• Enzymes store extra energy that is twice as much energy as carbohydrate.

• Enzymes are needed to carry out variety of cellular functions or reactions.

Poll

How enzymes are named?

• The names end in -ose.

• The names end in -ase.

• The names end in -ate.

Poll

Which one is an enzyme?

• carbohydrate

• lipid

• lipase

• sucrose

Poll

What does denature/d mean in biology?

• the permanent destruction

• they are killed

• taking away or altering the natural qualities so they are no longer active and cannot function

Poll

Why does most chemical reactions happen faster at higher temperatures?

• This is because the molecules have more kinetic energy so they're moving around faster and increases the collisions between the active site and substrate.

• It is impossible to tell.

Poll

However, enzymes are damaged by high temperatures. But before it gets damaged, there's a certain point of temperature at which an enzyme works fastest. It is called an _____________.

• optimum temperature

• peak level

Poll

Which is more acidic?

• pH 4

• pH 9

Reference: Biology Textbook p. 52