what are the three characteristics of virus?
451218
['Non living structures.', 'Non-cellular.', 'Contain a protein coat called the capsid.', 'Have a nucleic acid core containing DNA or RNA (one or the other - not both)', 'Capable of reproducing only when inside a HOST cell.']
160936
The simplest virions consist of two basic components: nucleic acid (single- or double-stranded RNA or DNA) and a protein coat, the capsid, which functions as a shell to protect the viral genome from nucleases and which during infection attaches the virion to specific receptors exposed on the prospective host cell.
7764
Those characteristics are cellular organization, reproduction, metabolism, homeostasis, heredity, response to stimuli, growth and development, and adaptation through evolution. Some things, such as a virus, demonstrate only a few of these characteristics and are, therefore, not alive.
1425217
Most viruses have either RNA or DNA as their genetic material. The nucleic acid may be single- or double-stranded. The entire infectious virus particle, called a virion, consists of the nucleic acid and an outer shell of protein.
437242
['Have genetic material i.e either DNA or RNA .', 'Can undergo mutation.', 'Show irritability.', 'Are capable to reproduce and hence can increase their number.', 'React to heat, chemicals and radiations.', 'Are resistant to antibiotics.']
296754
['8 Characteristics of Life. Reproduction, Cells, Genetic Material, Evolution/Adaptation, Metabolism, Homeostasis, Response to Stimuli, Growth/Development.', 'Reproduction. Organisms make new organisms. ... ', 'Genetic Material. ... ', 'Cell. ... ', 'Grow and Develop. ... ', 'Metabolism. ... ', 'Response to Stimuli. ... ', 'Homeostasis.']
851683
All cells have at least three common features: a cell membrane, cytoplasm and DNA. In addition, Cell Theory has 3 basic characteristics: All organisms are made up of one or more cell.
28262
1. Viruses are infectious agents with both living and nonliving characteristics. 2. Living characteristics of viruses include the ability to reproduce – but only in living host cells – and the ability to mutate.
100396
['growth and activities of micro-organisms, principally bacteria, yeasts and moulds;', 'activities of natural food enzymes;', 'insects, parasites and rodents;', 'temperature, both heat and cold;', 'time.']
854556
The characteristics that viruses have common with living organisms are reproduction and heredity. They can only reproduce inside the host cell and they do have DNA or RNA.
919378
Classification of Viruses. Morphology: Viruses are grouped on the basis of size and shape, chemical composition and structure of the genome, and mode of replication. Helical morphology is seen in nucleocapsids of many filamentous and pleomorphic viruses.
503975
Most viruses have either RNA or DNA as their genetic material. The nucleic acid may be single- or double-stranded. The entire infectious virus particle, called a virion, consists of the nucleic acid and an outer shell of protein. The simplest viruses contain only enough RNA or DNA to encode four proteins.
1383419
Viruses lack a cell structure, they cannot exist independently from a host cell, and they can infect both prokaryote and eukaryote organisms. Eukaryotic cells have a nucleus and organelle.
1200518
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. In most cases, they reprogram the cells to make new viruses until the cells burst and die.
267219
Viral replication involves six steps: attachment, penetration, uncoating, replication, assembly, and release. During attachment and penetration, the virus attaches itself to a host cell and injects its genetic material into it.
516452
['Single-Celled. Perhaps the most straightforward characteristic of bacteria is their existence as single-celled organisms. ... ', 'Absent Organelles. ... ', 'Plasma Membrane. ... ', 'Cell Walls. ... ', 'DNA.']
1283285
['viruses. are infections agents that are too small to be seen with a light microscope.', 'viruses. are not cells, lack of nucleus, cyytoplasm, and organelles.', 'nucleic acid, capsid, envelope. viruses components.', 'genome. ... ', 'single stranded, double stranded, linear, segmented, circular. ... ', 'capsids. ... ', 'envelope. ... ', 'envelope.']