O bombeamento de sódio para fora e o de potássio para
dentro da célula é um processo de transporte ativo realizado por uma proteína transportadora. Esse processo só ocorre em células vivas pois exige gasto de ATP, uma vez que ocorre contra o gradiente de concentração, isto é, do meio menos concentrado de solutos para o meio mais concentrado.
No interior das hemácias (glóbulos vermelhos), há uma concentração de íons sódio (Na+) muito menor do que a concentração desse íon no plasma sanguíneo, pois o Na+ é constantemente bombeado para fora das hemácias. Em relação aos íons potássio (K+) ocorre o contrário: a concentração desse íons é sempre maior no interior das hemácias e mesmo tendendo a sair por difusão, o K+entra ativamente na célula sanguínea.
Um comentário:
Consumers also spent freely over the hot summer months, in a positive sign for the UK economy. Jim Rogers, investisseur succ et commentateur financier am consid que les d de FNB indiciels sont plus vuln aux corrections et aux krachs boursiers que les autres.
It was during a trip to scout a different player that Alabama found its newest commitment.After meeting with one of IMG Academy's highly ranked 2021 prospects, Crimson Tide assistant Bryan Hodgson decided to stick around to watch the school's post graduate team.It was New Air Jordan Shoes within the first five minutes of that game Cheap Nike Air Force 1 earlier this year seeing some plays that Darius Miles was making as a 6 foot 7 wing player that Hodgson became intrigued.Now, a couple months later, Miles Air Force 1 In Store is the latest player to join Alabama's 2020 recruiting class and has added to what's been a highly productive last two weeks for MK Outlet the Tide from a recruiting standpoint.Alabama has now landed three new commitments in these last 13 days, going from a one person class as recently as March 27 to a four Cheap Yeezy Shoes Sale member group that's ranked as the 15th best class nationally within the 247Sports Composite rankings."I really like what they're doing," 247 director of basketball scouting Coach Outlet Clearance Jerry Meyer said.It started with Alabama landing 6 foot 6 five star Canadian combo guard Josh Primo and has continued with the Tide securing the two new commitments this week 6 6 four star JUCO combo guard Keon Ellis on Sunday and then Miles on Tuesday.Alabama is now set to add those three to Jordan Shoes For Sale go along with four star power forward Keon Ambrose Yeezy Shoes For Sale Hylton, who signed with the Tide in November."It looks like they've gotten three versatile players that they're going to need," Meyer said..
Postar um comentário