Question

An enzyme-based biosensor primarily consists of

• A. A catalyst and substrate
• B. A signal amplifier and detector
• C. A membrane and power source
• D. A bioreceptor and transducer

Hint:

Basic components of a biosensor: \[ \boxed{ \text{Bioreceptor} \longrightarrow \text{Transducer} \longrightarrow \text{Signal Processor} } \] The enzyme serves as the biological recognition element.

Answer 1

The Correct Option is D

Step 1: Recall the components of a biosensor. A biosensor is an analytical device that converts a biological response into a measurable signal. Its two essential components are \[ \boxed{ \text{Bioreceptor} + \text{Transducer}. } \]

Step 2: Identify the correct option. In an enzyme-based biosensor,
• the enzyme acts as the bioreceptor,
• the transducer converts the biochemical reaction into an electrical signal. Hence, \[ \boxed{\text{A bioreceptor and transducer}} \] is the correct answer. Therefore, \[ \boxed{(D)} \] is the correct answer.