Answer:
e) An agent, such as a plasmid, used to transfer DNA from an in vitro solution into a living cell.
Explanation:
A cloning vector is a naked DNA that can be maintained and into which a foreign DNA can be inserted. A vector needs to be small in size, have restriction sites for endonuclease enzymes and the ability to multiply and express itself at a high rate, without disrupting the host cells machinery. Perfect cloning vectors are DNA molecules from viruses, plasmids and bacterial species such as E.Coli.
Robert Koch is best known for establishing a link between bacteria and disease.
Robert Koch was a German doctor that made an important contribution to the field of microbiology and public health. During his experiments he identified the particular microorganisms that cause diseases such as tuberculosis, cholera, and anthrax. Koch’s research resulted to the development of Koch's postulates, which are four general principles that links specific microorganisms (such as bacteria) to specific diseases and is being used today in medical microbiology as a standard.
Pressure heat the other one is maggots
Answer:
because some genes expressed in neuron is not expressed in WBC's.
Explanation:
Every cell in the body contains the same DNA sequence and the same gene but all the genes are not expressed in a cell. Each cell expresses a particular set of genes according to the function they perform.
For example, a red blood cell will express a gene that code for hemoglobin to carry oxygen but white blood cell do not carry oxygen, therefore, it will not express the gene of hemoglobin rather it will express a gene that make proteins that can be used to kill pathogens.
Therefore according to the function of cell genes are expressed so neurons express genes that make neurons receive and respond to electric signal.
