how are virus different from microorganism Related: Short Notes - Microorganisms: Friend and Foe, Science, Class 8

Question

how are virus different from microorganism Related:  Short Notes - Microorganisms: Friend and Foe, Science, Class 8

Answer

Microorganisms are friend and foe both but virus is only a foe/enemy. For example CORONAVIRUS, SARS virus etc.

Answer

Viruses are consider as mesobiotic… where as other microbes are biotic.
But some scientists consider viruses are living because: 1. They show growth, mutation and irritability. 2. They have genetic material, either DNA or RNA. 3. They have ability to infect. 4. They can be transmitted from the diseased host to healthy ones. 5. They react to heat, chemicals and radiation. 6. The nuclei proteins of viruses have similarity with the protein and nucleic acid of living organisms.

And some consider them as non-living because: 1. They do not respire or excrete. 2. They can be crystallised. 3. They lack energy producing enzyme system.

Answer

Viruses must have a living host - like a plant or animal-to multiply, while most bacteria can grow on non-living surfaces. There are some useful bacteriabut all viruses are harmful.

Answer

Introduction:
Microorganisms are tiny organisms that are invisible to the naked eye. They can be found almost everywhere on Earth, including the air, water, soil, and even inside our bodies. They can be classified into various groups such as bacteria, fungi, protozoa, and viruses. While viruses are considered microorganisms, they differ significantly from other microorganisms in several aspects.

Differences between viruses and other microorganisms:

1. Structure:
- Microorganisms: Bacteria, fungi, protozoa, and other microorganisms are structurally complex and consist of cells. They have a distinct cell membrane, nucleus, and other organelles.
- Viruses: Viruses, on the other hand, are much simpler in structure. They are not cells but are composed of genetic material, either DNA or RNA, surrounded by a protein coat called a capsid. Some viruses may also have an outer envelope derived from the host cell's membrane.

2. Reproduction:
- Microorganisms: Microorganisms reproduce through various methods such as binary fission (bacteria), budding (yeast), spore formation (fungi), and binary fission/conjugation (protozoa).
- Viruses: Viruses cannot reproduce on their own. They need a host cell to replicate. Once inside a host cell, they take over the cellular machinery and use it to produce more viral particles.

3. Metabolism:
- Microorganisms: Microorganisms have their own metabolism and can carry out various metabolic activities such as respiration, photosynthesis, and fermentation.
- Viruses: Viruses do not have their own metabolism. They are essentially inert outside a host cell and do not perform any metabolic activities.

4. Size:
- Microorganisms: Microorganisms are relatively larger in size compared to viruses. Bacteria, fungi, protozoa, and other microorganisms can be seen under a microscope.
- Viruses: Viruses are much smaller and can only be observed using an electron microscope. They are typically between 20 to 300 nanometers in size.

5. Antibiotic susceptibility:
- Microorganisms: Microorganisms such as bacteria can be treated with antibiotics, which are drugs that kill or inhibit the growth of bacteria.
- Viruses: Antibiotics do not work against viruses. Viral infections are typically treated with antiviral drugs that target specific viral mechanisms.

Conclusion:
In summary, viruses are distinct from other microorganisms in terms of their structure, reproduction, metabolism, size, and susceptibility to antibiotics. While microorganisms can be beneficial or harmful to humans and the environment, viruses are primarily known for causing various infectious diseases. Understanding the differences between viruses and other microorganisms is crucial in developing strategies to prevent and treat viral infections.

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