What is a true statement about a virus?

What is a true statement about a virus?

All true viruses contain nucleic acideither DNA (deoxyribonucleic acid) or RNA (ribonucleic acid)and protein. The nucleic acid encodes the genetic information unique for each virus. The infective, extracellular (outside the cell) form of a virus is called the virion.

What characteristics of viruses are true?

Characteristics

  • 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.

Which statement is not true for viruses?

Viruses do not have DNA or RNA.

Which of the following statements is are correct viruses can infect?

Detailed Solution. The correct answer is 1, 2 and 3. Viruses can infect almost any kind of host that has living cells. Animals, plants, fungi, and bacteria etc.

What is a description of a virus?

Characteristics

  • 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.

What are the 7 characteristics of a virus?

A virus is a small collection of genetic code, either DNA or RNA, surrounded by a protein coat. A virus cannot replicate alone. Viruses must infect cells and use components of the host cell to make copies of themselves. Often, they kill the host cell in the process, and cause damage to the host organism.

Which characteristic is true of all viruses?

They are acellular, that is, they contain no cytoplasm or cellular organelles. They carry out no metabolism on their own and must replicate using the host cell’s metabolic machinery. In other words, viruses don’t grow and divide. Instead, new viral components are synthesized and assembled within the infected host cell.

What are the main characteristics of viruses?

Characteristics

  • 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.

What 7 characteristics do viruses have?

Let’s compare viruses to the 7 criteria researchers have set to determine if something is alive.

  • Living things must maintain homeostasis.
  • Living things have different levels of organization.
  • Living things reproduce.
  • Living things grow.
  • Living things use energy.
  • Living things respond to stimuli.

Which is true about viruses?

In fact, viruses should not even be considered organisms, in the strictest sense, because they are not free-livingi.e., they cannot reproduce and carry on metabolic processes without a host cell. All true viruses contain nucleic acideither DNA (deoxyribonucleic acid) or RNA (ribonucleic acid)and protein.

What are not true about viruses?

Unlike true organisms, viruses cannot synthesize proteins, because they lack ribosomes (cell organelles) for the translation of viral messenger RNA (mRNA; a complementary copy of the nucleic acid of the nucleus that associates with ribosomes and directs protein synthesis) into proteins.

Which statement is incorrect for viruses?

Viruses are not included in any system of classification. Viruses are non-living but develop living characters like multiplication when they enter in a suitable host. Ability to undergo mutation and ability to be crystallized are living characteristics of viruses.

Which statement is true about virus?

Viruses are smaller than the bacteria. Viruses consists of a genetic material (DNA or RNA) as well as a protein coat. Viruses require the host cell to reproduce. They are inactive outside the host cell.

What 3 things can’t viruses do?

Viruses are not made out of cells, they can’t keep themselves in a stable state, they don’t grow, and they can’t make their own energy.

Which of the following statement is correct viruses can infect?

The correct answer is 1, 2 and 3. Viruses can infect almost any kind of host that has living cells. Animals, plants, fungi, and bacteria etc. can get infected by a virus.

Which of the following statement is true about virus?

A virus always consists of double strands of DNA or RNA surrounded by protein coat.

Which of the following statements is not correct for viruses?

Viruses do not have DNA or RNA.

What 3 organisms can a virus infect?

Viruses infect all types of organisms, including animals and plants, as well as bacteria and archaea.

What is the best description of a virus?

A virus is an infectious agent of small size and simple composition that can multiply only in living cells of animals, plants, or bacteria.

What is the physical description of a virus?

They are acellular, that is, they contain no cytoplasm or cellular organelles. They carry out no metabolism on their own and must replicate using the host cell’s metabolic machinery. In other words, viruses don’t grow and divide. Instead, new viral components are synthesized and assembled within the infected host cell.

What is a simple definition of virus?

A virus is an infectious agent that can only replicate within a host organism. Viruses can infect a variety of living organisms, including bacteria, plants, and animals. Viruses are so small that a microscope is necessary to visualize them, and they have a very simple structure.

What are the 6 characteristics of viruses?

These are: 1) attachment; 2) penetration; 3) uncoating; 4) replication; 5) assembly; 6)release. As shown in , the virus must first attach itself to the host cell.

What are characteristics of viruses?

They are acellular, that is, they contain no cytoplasm or cellular organelles. They carry out no metabolism on their own and must replicate using the host cell’s metabolic machinery. In other words, viruses don’t grow and divide. Instead, new viral components are synthesized and assembled within the infected host cell.

What are 5 facts about viruses?

20 Things You Didn’t Know About Viruses

  • Viruses are not alive: They do not have cells, they cannot turn food into energy, and without a host they are just inert packets of chemicals.
  • Viruses are not exactly dead, either: They have genes, they reproduce, and they evolve through natural selection.

What are the 7 characters of life?

All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.

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