Enzymes are not found in - DASH

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Question

Enzymes are not found in

fungi

algae

virus

cyanobacteria.

Solution

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Step-by-Step Explanation Step 1: Overview of the Question The question asks which among the given options (fungi, algae, virus, cyanobacteria) lacks enzymes. The correct answer provided is “virus.” Step 2: Characteristics of Viruses Viruses are unique in that they cannot carry out metabolic processes by themselves. They consist of genetic material (DNA or RNA) enclosed in a protein coat, and sometimes an additional lipid envelope. However, outside of a host cell, viruses are inert particles. Step 3: Enzymes and Metabolic Activities Enzymes are essential proteins that catalyze biochemical reactions within living cells. Organisms such as fungi, algae, and bacteria (including cyanobacteria) can synthesize their own enzymes because they possess the necessary cell machinery (ribosomes, metabolic pathways, etc.) to conduct metabolic processes. Step 4: Why Viruses Do Not Have Their Own Enzymes Viruses are not capable of independent metabolic activity. They do not possess ribosomes or any other organelles required for protein synthesis. As a result, they cannot synthesize their own enzymes. Instead, viruses depend completely on their host cell’s machinery to replicate and to produce any proteins needed. Therefore, viruses lack the cellular structures and processes necessary to produce enzymes independently. Step 5: Conclusion Because viruses rely on host cells for all enzymatic and metabolic functions, they do not have their own enzyme systems. This is the reason why “virus” is the correct answer to the question of which entity lacks enzymes.

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Biology Subject Chemistry Subject Mathematics Subject Physics Subject Subjects Subject

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Parent Quiz 806626

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