Computer Viruses

1. Attachment: The virus attaches to the surface of the host cell.
2. Entry: The virus enters the cell, either by direct fusion with the host cell membrane or by endocytosis.
3. Replication: The virus releases its genetic material and hijacks the cellular machinery to replicate itself.
4. Assembly and Release: New virus particles are assembled and released from the cell to infect other cells.

File Viruses infect applications. These viruses usually infect COM and/or EXE programs, though some can infect any program for which execution or interpretation is requested, such as SYS, OVL, OBJ, PRG, MNU and BAT files. System Sector Viruses infect executable code found in certain system areas on a disk. Macro Virus a program or code segment written in the internal macro language of an application and attached to a document file (such as Word or Excel).

They rely on their host. They can not reproduce on their own, so they are not considered living. They inject genetic information into a host cell and make the cell produce more viruses.

The term "bug" to refer to errors in a computer program originated in the early days of computing. In one instance, a moth caused a malfunction in a Harvard Mark II computer in 1947, and engineers found and removed the moth, starting the use of the term "bug" for programming errors.

Viruses replicate by taking over a host cell's machinery to create copies of themselves. This process involves the virus injecting its genetic material into the host cell, which then uses the viral instructions to produce new viral particles. These new viruses can then go on to infect other cells and continue the replication cycle.

A hidden virus multiplies by hijacking the host cell's machinery to replicate its genetic material and produce new viral particles. The virus then releases these new particles, which can go on to infect other cells and continue the replication cycle.

Viruses are called viruses because, like real-world viruses (e.g., influenza and so on), they 'infect' a computer and often spread throughout it by making copies of themselves and making their code part of other programs. Viruses don't usually spread from computer to computer on their own, instead relying on users to pass on infected files or copies of the virus to other users, such as by email.

Computer viruses are typically developed by individuals with advanced programming skills who write malicious code to exploit vulnerabilities in computer systems or software. They may use a variety of programming languages and techniques to create the virus, often incorporating stealthy tactics to evade detection by security software. The ultimate goal of virus development is often to gain unauthorized access to a system, steal sensitive information, or disrupt normal computer operations.

The phases of a computer virus life cycle typically include: infection, replication, activation, and spread. During the infection phase, the virus gains entry into a system. In the replication phase, the virus creates copies of itself to spread further. Activation occurs when the virus is triggered to execute its malicious payload. Finally, the virus spreads by infecting other systems through various means.

A computer virus typically starts with the infection phase, where it enters a system. It then replicates itself to spread to other systems, followed by the activation phase when it executes its malicious payload. Finally, the virus may enter a dormancy phase where it remains undetected or gets removed by antivirus software.

Viruses are killed by plain oxygen, above the 20.08% of what we breath. Viruses are Anaerobic, meaning - when it comes in contact with H202, ozone, or just simply a medical bottle of compressed oxygen with a regulator fed anally for just a few Minutes at a time, for HIV!

I've never had the virus myself, but i know alot about it just by reading about it on the internet. surch on google, "Macro Virus", and you will ge tones of grerat answers about the topic... personals i like the site riht off of Microsoft, surch Macro virus, and the fourth link down, is a great place to look.

Phase contrast microscopy is often used for viewing colorless specimens, as it enhances the contrast between different parts of the specimen based on density differences. This type of microscopy is particularly useful for observing live biological samples without the need for staining.

Every virus has two main parts: a protein coat called capsid that surrounds and protects the genetic material, and the genetic material itself which can be DNA or RNA. The genetic material contains the instructions needed for the virus to replicate and infect host cells.

There are different types of viruses. Some of the prominent ones are Trojan horses , worms, and email viruses. The Trojan horses are computer programs which pretend to do one thing but actually do damage when they start it. The worms viruses are pieces of software that use computer networks and security flaws to create copies of itself. A cop y of the worm will then scan the network for any other machine that has a specific security flaw, and then replicate itself to the new machine. With regards to email viruses, these use email messages, and usually will copy and automatically mail itself to hundreds of people.

There are two generalities of viruses, including resident and nonresident viruses. Resident viruses are those viruses that contain a specific replication module which is alarmingly similar to t hose employed by nonresident viruses. A resident virus is one that stays in memory after it executes, and even after its host program is executed. Resident viruses are often subdivided into categories like fast infectors, and slow infectors. Fast infectors are those particular viruses which are designed to affect as many files as possible and slow infectors are designed to infect hosts infrequently. For instance some slow infectors will only infect files when they are copied.

Nonresident viruses on the other hand are those viru ses which consist of a finder module and a replication module. The finder module is responsible for finding new files to infect, while the replication module is the component that actually infects the found files

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If you have windows already in your computer then the window that you think is asking to install the windows might be of installing the updates or other functions about it. and if it is only asking to install windows then it is possible that might be virus messages to do not press or anything once run a system scan with an anti virus software.

A worm virus is a type of malware that self-replicates and spreads over computer networks, exploiting vulnerabilities in software to infect other devices. Once a device is infected, the worm can execute malicious actions like stealing data, causing damage, or creating backdoors for further attacks. Worm viruses can spread rapidly, causing widespread damage if not contained quickly.

Viruses are classified based on various characteristics such as their type of genetic material (DNA or RNA), their shape, size, mode of transmission, and the host they infect. They are categorized into families, genera, and species based on these criteria. The International Committee on Taxonomy of Viruses (ICTV) is responsible for officially classifying and naming viruses.

Meristem tissues are virus free because they have a high rate of cell division and low metabolic activity, making them less susceptible to viral infections. Additionally, meristems often lack open plasmodesmata connections that viruses typically use to spread between plant cells. Lastly, meristem cultures are often treated with antiviral agents or heat therapy to eliminate any existing viruses.

No, Ameba Pico is not a virus. It is a legitimate online game that can be played on social platforms like Facebook. However, it is important to ensure that you access the game through official and secure channels to avoid any potential risks.

bcoz some viruses are able to survive even in extreme hard conditions like high temperature. For those medicines r used which breaks the bases of their DNA. REMEMBER..... viruses r prokaryotic and they r from the very beginning of life on earth. they infect the hosts and more viruses r created and .......u know what

For more visit.. http://en.wikipedia.org/wiki/Virus#Bibliography. they also have a protein coating which is hard to break in to.