While there some advanced viruses that seem fancy, viruses don't have any of the parts you would normally think of when you think of a cell. They have no nuclei, mitochondria, or ribosomes. Some viruses do not even have cytoplasm. That strand of nucleic acid is considered the core of the virus..
In this regard, are mitochondria viruses?
Among the simplest RNA viruses, they are capsidless – they exist in the infected cell as RNA molecules, passed to other cells during cell division or cell fusion. Consequently there is no need for virus particles to pass through multiple membranes to infect mitochondria.
Subsequently, question is, do viruses have flagella? Flagellum is a lash-like appendage that protrudes from the cell body of certain bacteria. Some DNA bacterial viruses use flagella to attach to the host cell. This contact with the flagellum facilitates concentration of phage particles around the receptor on the bacterial cell surface.
In this manner, do viruses have a cell wall?
A virus particle ( virion) does not have cell wall ( like prokaryotic and eukaryotic cells). It has a protein coat that encases the nucleic acid ( DNA or RNA). A virus particle can not reproduce by itself, as it does not have ribosomes ( so can not synthesize proteins) and can not synthesize energy ( ATP).
Do viruses have enzymes?
Yes, viruses have enzymes. Some enzymes are carried within the capsid, some are carried on the viral envelope and some are only produced in the infected cell. Because a cell lacks these enzymes, the virus particle MUST carry a copy of that enzyme or the genome would be inactive in the cell.
Related Question Answers
What are three things viruses Cannot do?
Without a host cell, viruses cannot carry out their life-sustaining functions or reproduce. They cannot synthesize proteins, because they lack ribosomes and must use the ribosomes of their host cells to translate viral messenger RNA into viral proteins.Do viruses have a vacuole?
Secondly, if a virus is contained in an envelope, the host cell can phagocytosise the entire virus particle into a vacuole. When the virus breaks out of the vacuole, it then releases its nucleic acid into the cell.What are viruses made of?
A virus is made up of a core of genetic material, either DNA or RNA, surrounded by a protective coat called a capsid which is made up of protein. Sometimes the capsid is surrounded by an additional spikey coat called the envelope. Viruses are capable of latching onto host cells and getting inside them.Do viruses have chloroplasts?
Do viruses contain cell organelles such as cytoplasm ribosomes mitochondria or chloroplast? - Quora. Viruses are considered by most scientists not to be living organisms. Hence the virus replicates without the need for its own ribosomes, mitochondria or chloroplasts - it simply uses those of the host!Do bacteria have mitochondria?
Bacteria do not contain membrane-bound organelles such as mitochondria or chloroplasts, as eukaryotes do.Where did mitochondria come from?
The endosymbiotic hypothesis for the origin of mitochondria (and chloroplasts) suggests that mitochondria are descended from specialized bacteria (probably purple nonsulfur bacteria) that somehow survived endocytosis by another species of prokaryote or some other cell type, and became incorporated into the cytoplasm.Do viruses have a protein coat?
All viruses contain nucleic acid, either DNA or RNA (but not both), and a protein coat, which encases the nucleic acid. Some viruses are also enclosed by an envelope of fat and protein molecules. In its infective form, outside the cell, a virus particle is called a virion.How do viruses reproduce?
The structure of viruses allows them to succeed in their main mission—reproduction. Lytic Cycle Once attached to a host cell, a virus injects its nucleic acid into the cell. The nucleic acid takes over the normal operation of the host cell and produces multiple copies of the virus's protein coat and nucleic acid.How large is a virus?
Most viruses vary in diameter from 20 nanometres (nm; 0.0000008 inch) to 250–400 nm; the largest, however, measure about 500 nm in diameter and are about 700–1,000 nm in length. Only the largest and most complex viruses can be seen under the light microscope at the highest resolution.How big is a virus in microns?
Viruses: Parasitic infectious microbes, composed almost entirely of protein and nucleic acids, which can cause disease(s) in humans. Viruses can reproduce only within living cells. They are 0.004 to 0.1 microns in size, which is about 100 times smaller than bacteria.Do viruses have a membrane?
A virus is made up of a DNA or RNA genome inside a protein shell called a capsid. Some viruses have an external membrane envelope. Viruses are very diverse. They come in different shapes and structures, have different kinds of genomes, and infect different hosts.What are viruses cell walls made of?
A complete virus particle, known as a virion, consists of nucleic acid surrounded by a protective coat of protein called a capsid. These are formed from identical protein subunits called capsomeres. Viruses can have a lipid "envelope" derived from the host cell membrane.What is the smallest virus?
The smallest viruses are thought to be the Porcine Circovirus with an average capsid (outer protein coat of a virus which protects its genetic material) size of only 17nm. Parvoviruses come a close second with an average capsid size of 18-25nm.Do viruses change your DNA?
Viral transformation is the change in growth, phenotype, or indefinite reproduction of cells caused by the introduction of inheritable material. Through this process, a virus causes harmful transformations of an in vivo cell or cell culture. The term can also be understood as DNA transfection using a viral vector.Can virus be created?
Viruses can reproduce rapidly because they have relatively few genes. For example, influenza virus has only eight genes and rotavirus has eleven. In comparison, humans have 20,000–25,000. Some viral genes contain the code to make the structural proteins that form the virus particle.How do viruses protect themselves?
Scientists have identified a way some viruses protect themselves from the immune systems efforts to stop infections, a finding that may make new approaches to treating viral infections possible. These include faking or stealing a molecular identification badge that prevents a cell from recognizing a virus.Can viruses be cured?
Other viruses don't have a cure, but there are medications that may speed healing if they are taken early enough after your exposure to the virus. These include medications for influenza and shingles (herpes zoster). Medications for other viruses, such as HIV, keep the virus in check, but aren't a cure.Do viruses have Pili?
Viral attachment to host cell pilus. Pili are proteic retractile filaments up to 20 micrometer long that protrude from gram-negative bacteria. Some RNA and DNA bacteriophages use pili to attach to the host cell. There are many types of pili and each bacterial virus binds specifically to a precise type.What do viruses and bacteria have in common?
All viruses have is a protein coat and a core of genetic material, either RNA or DNA. Unlike bacteria, viruses can't survive without a host. They can only reproduce by attaching themselves to cells. Also unlike bacteria, most viruses do cause disease, and they're quite specific about the cells they attack. 
