viruses and classification of domains.

What is a virus outside a cell?

A virus outside a cell is a lifeless chemical that carries out no life function on its own.

do viruses fit in the 3 domain, 5 kingdom system of classification?

No, they do not. They don’t because they don’t display most of the charities of life. With the one expecting being reproduction but they must invade a cell before they can accomplish this.

what does a virus consist of?

A virus consists of an inner nucleic acid core. (Either rna or dna.) and a surrounding outer protective protein coat called a capsid.

How much does the capsid account for?

The capsid accounts for 95% of the total virus and gives a virus its shape. Sometimes a lipid membrane encloses the capsid.

How are viruses named?

By charities or traits of the organism such as : physical form, nucleic acid type, mode of replication, host organisms, and type of disease they cause.

How many domains are there and what are their names?

fhsre are 3 domains and they are archea, bacteria, and eukarya (or eukaryota)

What are the first two? (Archaea and bacteria.)

They are prokaryotic single celled organisms.

What’s within the third domain? (Eukarya)

There are currently 5 kingdoms.

Protistsa, chromista, Fungi, plantae, and animalia.

What is the kingdom “monera “?

Monera was a kingdom that existed before archea and bacteria, this kingdom included all prokaryotic cells (having no nucleus membrane

When did archea first appear?

3.5 billion years ago and are the first living things that appeared on earth.

What did archea live without?

They lived without oxygen.

Is their dna in the archaea?

There’s no DNA present due to the nucleic acid having a simpler form called a single strand.

What are their cell

Membrane composed of?

Their cell membranes are composed of membrane lipids that are branched hydrocarbon chains attached to glycerol by ether linkages.

What do archea have in their cell walls?

They have pseduopeptidoglycan with different sugars or other polysaccharides, glycoproteins, or even pure protein.

What are the three major groups of archaea?

Methanogens, (live where there’s a lot of methane like hogs or intenstianal tracks.)

extreme thermophiles , (organisms that thrive in temperatures up to 110c , they live in hot springs, geysers, ocean vents, and volcanos.

Extreme halophiles (organisms that live in very salty water like the Dead Sea.)