Multiple Choice
Protein kinase is an enzyme that functions in which of the following ways?
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6. Enzymes and Enzyme Kinetics
Enzymes
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is the primary function of enzymes in living cells?
A
They act as biological catalysts to speed up chemical reactions.
B
They provide structural support to cellular membranes.
C
They store genetic information.
D
They transport oxygen throughout the body.
Verified step by step guidance1
Understand the role of enzymes in biochemistry: Enzymes are specialized proteins that facilitate chemical reactions in living organisms by lowering the activation energy required for the reaction to occur.
Identify the term 'biological catalyst': Enzymes act as biological catalysts, meaning they speed up chemical reactions without being consumed or permanently altered in the process.
Eliminate incorrect options: Structural support to cellular membranes is provided by lipids and proteins, not enzymes. Genetic information is stored in DNA and RNA, and oxygen transport is primarily carried out by hemoglobin, not enzymes.
Focus on the correct function: The primary function of enzymes is to catalyze biochemical reactions, ensuring that essential processes like metabolism, DNA replication, and energy production occur efficiently.
Conclude with the correct answer: Based on the explanation, the correct answer is 'They act as biological catalysts to speed up chemical reactions.'
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