Answer:
antibodies to a disease bacterium
Explanation:
Answer:
Matter in an ecosystem:
- must be continuously replenished
- is recycled and reused
- is returned to the earth by decomposers
Answer:
A is a eukaryotic cell while B is a prokaryotic cell
Explanation:
The researcher can conclude that <u>cell A is eukaryotic while cell B is prokaryotic.</u>
In eukaryotic cells, the <u>DNA is located majorly in the nucleus and the replication of the DNA happens in the nucleus</u>. Hence, it is only logical to find segments of new DNA in the nucleus of cell A during replication.
<u>Prokaryotic cells, however, lack a nucleus</u>. Their DNAs lie freely within the cytoplasm. This thus means that replication can only happen in the cytoplasm. Hence, it follows logically to find a new DNA segment in the cytoplasm of cell B.
DNA samples are added into wells with the help of electric current.
<h3>How dna samples added to the wells?</h3>
DNA samples are added into wells at one end of a gel whereas an electric current is applied to pull them through the gel. DNA fragments are negatively charged, so they move towards the positive electrode.
So we can conclude that DNA samples are added into wells with the help of electric current.
Learn more about dna here: brainly.com/question/16099437
