Viruses are made up of only atoms and molecules; they contain genes in the form of either DNA or RNA. They have no metabolic activity and therefore, cannot maintain a steady internal state. When a virus infects cells, it forces the cell to make more copies of the virus. The genes found in populations of viruses change over time allowing viruses to acquire new characteristics and features. Categorize each characteristic of life into the "YES" or "NO" category depending on whether a virus has it or not.

Question

21-04-2020
Biology

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Viruses are made up of only atoms and molecules; they contain genes in the form of either DNA or RNA. They have no metabolic activity and therefore, cannot maintain a steady internal state. When a virus infects cells, it forces the cell to make more copies of the virus. The genes found in populations of viruses change over time allowing viruses to acquire new characteristics and features. Categorize each characteristic of life into the "YES" or "NO" category depending on whether a virus has it or not.

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emmartunde emmartunde · Answer 1 · 2020-04-23T04:43:46+02:00

Answer:

VIRUSES ARE MADE UP OF ONLY ATOMS AND MOLECULES -----YES

THEY CONTAIN GENES IN THE FORM OF EITHER DNA OR RNA------YES

THEY HAVE NO METABOLIC ACTIVITY AND THEREFORE CANNOT MAINTAIN A STEADY INTERNAL STATE ------YES

WHEN A VIRUS INFECTS CELLS, IT FORCES THE CELL TO MAKE MORE COPIES OF THE VIRUS------YES

THE GENES FOUND IN POPULATIONS OF VIRUSES CHANGE OVER TIME ALLOWING VIRUSES TO ACQUIRE NEW CHARACTERISTICS AND FEATURES-------YES

Explanation:

Viruses are minute micro-organisms made up of genetic material either DNA or RNA molecule and are surrounded by a protective coat called capsule made up of proteins. Viruses are very small that and cannot survive or live outside an host, who they infests. Viruses cannot maintain a steady internal environment and their reproduction is in close proximity with the host cells. They use the reproductive pathways of the host cell to allow for their own reproduction. They do not possess the protein synthetic enzymes and machinery to encode, transcribe or translate for a protein molecule and hence forces the host cells to make more copies of the virus. Viruses upon replicating in the host cells, leave the host cell either through budding or lysis that is bursting out of the cell. They kills the host cell and then leave to enter a new cell and multiply. Viruses are also known to evolve over time in a population in which new features of the virus can exits. For example when two viruses infect a cell, they can swap genes and and other genetic materials through recombination to form a new virus a situation in which is the cause for drug resistance in HIV.