Bacteria have been the very first organisms to live on earth in the waters of the first oceans. At first, there were only anaerobic heterotrophic bacteria.
It reproduces cells to work for all systems
The blue-white screen refers to a procedure of screening that allows for the brisk and convenient determination of recombinant bacteria in vector-based molecular cloning experiments. In the process, the DNA of interest is ligated into a vector. The blue colonies constitute of self-relegated plasmids that are devoid of DNA inserts obstructing the lac Z gene.
The white colonies contain bacteria that conduct plasmids, which possess the inserts of DNA fragments that obstruct the lac Z gene. Therefore, the researcher needs to sequence the plasmids of the white colonies prior to knowing which allele it constitutes.
Answer:
the answer is c
Explanation:
theories can be modified with new empirical data
Answer:
negative
Explanation:
Lateral-flow pregnancy test
It is a device use to confirm the prsence or the absence of the target analyte , which can be biomakers or the pathogens .
The very common type of lateral flow rapid test is the pregnancy test .
Lateral - flow technology uses colored nano particles , nitrocellulose membrane and antibodies to produce result of pregnancy .
As the sample is added , it flows along the test device passing via the conjugate pad to the nitrocellulose membrane and then to the absorbent pad.
The blue band on the control;l line and no band on the test line , gives a negative test of pregnancy .
