Question

ph, temperature, and concentration of enzyme or substrate
lactose
names of enzymes
factors that affect enzyme activity
catalyst

Explanation:

To determine which option the given factors (pH, temperature, and concentration of enzyme or substrate) belong to, we analyze each option:

• Lactose: A sugar (substrate for lactase), not related to these factors.
• Names of Enzymes: Refers to enzyme labels (e.g., lactase), not factors affecting activity.
• Factors that affect Enzyme Activity: pH, temperature, and substrate/enzyme concentration are well - known factors that influence how effectively an enzyme functions.
• Catalyst: A general term for substances (like enzymes) that speed up reactions, not specific to these influencing factors.

Answer:

Factors that affect Enzyme Activity