IB Biology Topic 1 Review

What is the optimum pH for this enzyme

• 6

• 6.5

• 7

• 7.5

What happens to the enzyme activity after pH 5.5?

• increases

• descreases

• stays the same

What is the enzyme activity level at pH 7.5?

• 12

• 14

• 16

• 18

Why do does optimum enzyme activity occur at certain pH ranges?

• The enzymes like low pH

• The enzymes like high pH

• Enzymes are found in different environments where pH varies, therefore, the enzymes need to be able to successfully operate within these conditions.

• Enzymes need to become damaged in different pH ranges in order to work.

The structure of enzymes proteins changes when the enzymes denature

• True

• False

The change in the structure means that the substrate is unable to bind to the active site

• True

• False

Enzymes are only found animal cells

• True

• False

The large organelle featured in this micrograph is called?

• Vacuole

• Mitochondria

• Endoplasmic reticulum

• Nucleus

The organelle featured here is a...

• Nucleus

• Vacuole

• Chloroplast

• Endoplasmic reticulum

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

What type of energy does chlorophyll capture?

• chemical

• mechanical

• light

• kinetic

Tags

NGSS.HS-LS1-5