An ectotherm gets its heat from external sources
(Remember "ecto" means outer, "endo" means inner)
Answer:
It has two tissue layers.
Explanation:
Bacteria and archaea are the two types of living beings made up of prokaryotic cells.
<h3>What are bacteria and archaea?</h3>
Bacteria and archaea are both prokaryotic and unicellular organisms. This means that they both lack a true nucleus and membrane-bound organelles. The genetic material is present in a long single loop of chromosome, called the nucleoid.
Both bacteria and archaea have a cell wall present outside of the cell membrane. The structural composition of the cell wall is different among them. In bacteria, the cell wall is made up of peptidoglycan (a sugar and protein complex compound) and in archaea, it is made of pure polysaccharides.
Both of these organisms reproduce asexually. They also have flagella for locomotion, pilus for adherence and a capsule outside of the cell wall for protection against conditions like dehydration.
Therefore, bacteria and archaea are living beings made up of prokaryotic cells.
Read more about prokaryotes, here
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D. White dwarfs are the stars in the lower left region of the H-R diagram
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Antibiotic immune systems
