Nā huahana

ʻO ka buffer biological kahi mea olaola i loaʻa ka hopena neutralizing i nā ion hydrogen.Ma kēia ala, kōkua ka mea hoʻolale ola i ka mālama ʻana i ke kino i ka pH kūpono i hiki ai i nā kaʻina biochemical ke holo pono.

ʻO ka hapa nui o nā mea hoʻopaʻa i loko o kahi waika nāwaliwali a me kahi kumu nāwaliwali.Kōkua lākou i ka mālama ʻana i ka pH i hāʻawi ʻia ma hope o ka hoʻohui ʻana o kahi waikawa a i ʻole kahi kumu.No ka laʻana, loaʻa i ke koko kahi ʻōnaehana pale carbonic (H2CO3) -bicarbonate (HCO3-).I loko o kēia ʻōnaehana, hoʻokaʻawale ʻia ka waika nāwaliwali i kahi liʻiliʻi, e hāʻawi ana i nā ion bicarbonate.Hiki i kēia mau iona ke hoʻopaʻa i nā iona H+ ʻē aʻe e lana ana i loko o ke koko.Hoʻololi kēia i ka ʻakika nāwaliwali a hoʻemi i ka nui o nā ion H+ i loko o ka hopena.

Hiki i nā mea hoʻolale ola ke lilo i ʻōnaehana pale e kōkua i ka mālama ʻana i kahi pH kūpaʻa a puni ka pH physiological.I ka hana ʻana i nā hoʻokolohua me nā ʻāpana pākahi o nā cell a i ʻole nā ​​protein pilikino, pono e noʻonoʻo nā ʻepekema i ka buffer a lākou e hoʻohana ai.Me ka loaʻa ʻole o kahi pale maikaʻi, hiki ke emi ka hana o ka mea a lākou e makemake ai e aʻo.

ʻO ka Buffers nā kinikona e kōkua i ka wai e kūʻē i ka hoʻololi ʻana i kona mau waiwai ʻakika ke hoʻohui ʻia nā kemika ʻē aʻe e hoʻololi mau i kēia mau waiwai.He mea nui nā pale no nā sela ola.No ka mea, mālama ka poʻe pale i ka pH kūpono o ka wai. He aha ka pH?He ana ia o ka waiʻakika o ka wai.No ka laʻana, he haʻahaʻa ka pH o ka wai lemon ma 2 a 3 a he waika loa - pēlā ka wai i loko o kou ʻōpū e wāwahi ai i ka meaʻai.No ka mea hiki i ka wai ʻakika ke hoʻopau i nā protein, a ua piha nā cell i nā protein, pono nā cell e loaʻa i nā pale i loko a i waho o lākou i mea e pale ai i kā lākou mīkini protein.ʻO ka pH i loko o kahi keena ma kahi o 7, i manaʻo ʻia ʻaʻole like me ka wai maʻemaʻe.