Multiple Choice
Enzymes classified as oxidoreductases catalyze which type of reaction?
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6. Enzymes and Enzyme Kinetics
Enzymes
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Which type of proteins act as biological catalysts to speed up chemical reactions in cells?
A
Antibodies
B
Enzymes
C
Hormones
D
Structural proteins
Verified step by step guidance1
Step 1: Understand the role of biological catalysts in cells. Biological catalysts are molecules that increase the rate of chemical reactions without being consumed in the process. These catalysts are essential for maintaining cellular functions efficiently.
Step 2: Recall the types of proteins listed in the problem: Antibodies, Enzymes, Hormones, and Structural proteins. Each type has a distinct function in the body.
Step 3: Analyze the function of enzymes. Enzymes are specialized proteins that act as biological catalysts. They lower the activation energy required for chemical reactions, thereby speeding up the reaction rate.
Step 4: Compare enzymes to the other protein types listed. Antibodies are involved in immune defense, hormones regulate physiological processes, and structural proteins provide support and shape to cells and tissues. None of these act as catalysts.
Step 5: Conclude that enzymes are the correct answer because they are the proteins responsible for catalyzing chemical reactions in cells.
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