Catalizador

Catalysts speed up reactions without being consumed. Platinum acts as a catalyst in car exhausts, aiding in the oxidation of harmful substances. In the human body, enzymes serve as natural catalysts, accelerating cellular reactions.

What is the primary function of a catalyst in a chemical reaction?

• To speed up the reaction without being consumed

• To be consumed in the reaction

• To increase the temperature of the reaction

• To change the color of the reactants

Which metal is commonly used as a catalyst in car exhaust systems?

• Platinum

• Silver

• Gold

• Copper

What is the role of platinum in car exhaust systems?

• To change the color of the exhaust

• To increase fuel efficiency

• To accelerate the oxidation of harmful substances

• To reduce the temperature of the exhaust

In the human body, what are enzymes primarily responsible for?

• Slowing down cellular reactions

• Speeding up cellular reactions

• Producing energy

• Consuming nutrients

How do enzymes function as catalysts in biological systems?

• By changing the pH of the reaction

• By speeding up reactions without being consumed

• By permanently altering the reaction

• By being consumed in the reaction