A Heavy-Metal Ion May Disrupt the Functioning of an Enzyme

question 235

Multiple Choice

A heavy-metal ion may disrupt the functioning of an enzyme because:

• A)substrates bond to the metal ion
• B)a metal ion may change the shape of the active site
• C)metal ions raise the pH of cellular fluid
• D)metal ions displace enzymes in intracellular fluid

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Definitions:

Cultural Eutrophication

The process by which a body of water becomes overly enriched with minerals and nutrients due to human activity, leading to excessive algae growth and oxygen depletion.

Nutrient Runoff

The movement of nutrients, typically from fertilizers or natural deposits, from land into water bodies, causing pollution and ecosystem imbalances.

Dredging Lake

The process of removing sediments and debris from the bottom of lakes or water bodies to improve their health or navigability.

Cultural Eutrophication

Accelerated nutrient enrichment of water bodies caused by human activities, leading to excessive algal blooms and aquatic ecosystem degradation.