Question

1 why is toxoplasma is deadly to an Aids patient

2 plasmid and it function

3 gene and it function

4 conjugation and its function

5 function of organi coumpound

6 function of interferon

Answer 1

1. Toxoplasma causes toxoplasmosis which results in a flue like symptoms in some people. Most of the people infected with toxoplsma never develop any sign and symptoms and do not require any treatment except some conservative management. In case of infection in pregnency condition or infection to week immune person severe complications may occur.

In case of HIV infection the pateints immune system becomes very week and infection with toxoplasma may cause CNS toxoplasmosis (lesions in the brain) which may be lethal.

2. Plasmid is the small, circular, diuble stranded extrachromosomal DNA generally present in bacteria. Plasmids have various functions. They may contain genes that responsible for enhancing the survival of an organism, either by killing other organisms or by defending the host cell from toxins. Some plasmids aid to the process of replication in bacteria.

3. Gene is the structural and functional unit of heridity. The main function of gene is to carry the genetic information to next generation. Gene encode mRNA which further proceed to protein synthesis via translation process.

4. Conjugation is a horizontal gene transfer method between bacteria in which a donar bacteria may transfer a gene to the recipient bacteria which may be beneficial for the recipient bacteria. For example some bacteria transfer antibiotic resistant gene to the others.

5. Organic compounds are the base of life because all living organisms contain carbon. Organic compounds provide energy to the cells, Plays a major role in formation of tissues, Fasten the chemical reactions throughout the body, and perform many other cellular functions. Nucleic acids are also organic compounds which are the bases of heredity.

6. Interferons are group of chemicals which release against the viral infection and thus promote anti-viral defenses.