Genetically modified bacteria (recombinant bacteria) with the human gene for insulin is useful because after it’s being put in fermentation tank it starts to produce human insulin protein. The process of making recombinant bacteria includes DNA cloning.
A target gene, in this case, insulin gene, is inserted into a circular piece of DNA called a plasmid via restriction enzymes and DNA ligases. Recombinant DNA is then introduced into bacteria via a process called transformation. With the right conditions the bacteria that contains the human insulin gene, will start transcribing the gene and translating the mRNA to produce many molecules of human insulin protein.
Answer:
A) & B)
Explanation:
A) There are certain viruses that are present in both healthy and disease people.
Example: Polio virus is found in many human but it causes disesease in only 1% of human.
B) Viruses require host machinery for replication so they may not replicate in pure culture.
The postulate C is also violated, the virus may not produce disease in non-human experimental host because of inappropriate animal or vaccinated animal etc. Others exception includes, the same disease may be caused by various organisms and different organisms can also cause the same disease.
Answer:
La unidad para medir las células es la micra (m ) la cual equivale a la milésima parte de un milímetro (1m = 0,001mm).
Explanation:
When this occurs the neutrons released by a fission reaction continue striking more nuclei. If the fuel rods in a reactor vessel produce too much heat, this condition may occur.
