Metabolism and Enzymes Quiz

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Questions and Answers

Which of the following is true about metabolic reactions?

They do not require the action of enzymes.
They primarily involve the storage of energy.
They involve the conversion of molecules into different forms. (correct)
They occur only in the presence of oxygen.

What is a property of enzymes?

They speed up chemical reactions by lowering the activation energy. (correct)
They only work in specific pH conditions.
They are consumed during the reaction.
They are not affected by temperature changes.

What is the primary function of metabolism?

To maintain a constant body temperature.
To convert food into energy and building blocks for cells. (correct)
To produce hormones.
To eliminate waste products from the body.

Which of the following is true about metabolic reactions?

Metabolic reactions can be anabolic or catabolic. (D) Signup and view all the answers

What is the property of enzymes that allows them to function under specific conditions?

Enzymes are specific to particular substrates. (B) Signup and view all the answers

What is the role of enzymes in metabolic reactions?

Enzymes speed up the rate of metabolic reactions. (C) Signup and view all the answers

Flashcards

What are metabolic reactions?

Metabolic reactions are the processes that involve the conversion of molecules into different forms using chemical reactions within cells.

What is an enzyme?

Enzymes are biological catalysts that speed up chemical reactions by lowering the activation energy required for the reaction to start.

What is the primary function of metabolism?

Metabolism's primary function is to convert food into energy and building blocks that the cells use for growth, repair, and other functions.

What are the two types of metabolic reactions?

Metabolic reactions can be anabolic or catabolic. Anabolic reactions build complex molecules from simpler ones, while catabolic reactions break down larger molecules into smaller ones.

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What makes enzymes specific to different substrates?

Enzymes are specific to particular substrates. This means that each enzyme only works with a specific type of molecule, like a lock and key.

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What is the role of enzymes in metabolic reactions?

Enzymes speed up the rate of metabolic reactions. This is because they lower the activation energy needed for the reaction to occur.

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Study Notes

Metabolic Reactions

Metabolic reactions are biochemical processes in living organisms that convert substrates into products.
They are essential for maintaining homeostasis and supporting life functions.

Property of Enzymes

Enzymes are biological catalysts that accelerate metabolic reactions without being consumed.
They have an active site that specifically binds to substrates, enabling reactions to occur more efficiently.

Primary Function of Metabolism

The primary function of metabolism is to provide energy and building blocks for cellular processes.
Metabolism is divided into two categories: catabolism (breaking down molecules for energy) and anabolism (building complex molecules from simpler ones).

Specific Conditions for Enzyme Function

Enzymes require specific conditions such as optimal temperature and pH to maintain their activity.
Deviations from these conditions can lead to decreased enzyme activity or denaturation.

Role of Enzymes in Metabolic Reactions

Enzymes lower the activation energy required for metabolic reactions, facilitating faster biochemical processes.
They play a crucial role in regulating metabolic pathways, ensuring that reactions occur in a controlled and efficient manner.