The drug dideoxycytidine, used to treat certain viral infections, is a nucleotide made with 2′,3′-dideoxyribose. this sugar lacks –oh groups at both the 2′ and the 3′ positions. this drug stops the growth of a dna chain when added to dna because:

This drug stops the growth of a DNA chain when added to DNA because DNA polymerase requires a 3′ end -OH group.

Molecular Formula:

In a dideoxynucleoside compound the 3'-hydroxyl group attached to sugar molecules are replaced by a hydrogen. This upgrade prevents the formation of "5' to 3' phosphodiester linkages", required for the elongation of DNA chains, which results in terminating viral DNA growth.

This drug inhibits HIV replication at small level, acting as a terminator of viral DNA. The toxic side effect is "axonal degeneration" resulting in "peripheral neuropathy".

1. the energy lost to disorder metabolism     -entropy

2. related to or possessing motion potential     -kinetic

3. all of the chemical reactions in an organism required for maintenance of the processes of life entropy     -metabolism

4. possible; ability to go into action or perform work kinetic     -potential

5. the study of energy and its transformations thermodynamics     -thermodynamics

answer: national resource conservation services

national resource conservation services is the us. based approach that provides technical and financial assistance for natural resource management. nrcs society in conservation of resources by involving in activities like farmland protection, flood prevention, watershed protection, urban conservation, conserves economic and environmental conditions. it conducts soil surveys and implements the policy of natural resources management on the society.