OSMOSE EM CÉLULAS DO TUBÉRCULO DA BATATEIRA

OSMOSE EM CÉLULAS DO TUBÉRCULO DA BATATEIRA

INTRODUÇÃO

A atividade tem como objetivo estudar a osmose em tecidos vegetais, utilizando células de batata. A osmose consiste na difusão de moléculas de água através da membrana celular, de uma região com maior quantidade de água para outra com menor quantidade. Nesse processo, a direção do movimento da água depende da concentração de soluto nas soluções, comparada com a concentração dentro das células da batata. Foi utilizada sacarose como soluto. Ao longo do tempo, a água pode entrar ou sair das células, provocando alterações no tamanho e no peso das amostras de batata.

REGISTO DE RESULTADOS

Registo Fotográfico

Tabela

GRÁFICO

Massa (g)

Concentração

CONCLUSÃO

EukaryoticCell

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Vegetal

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Prokaryotic Cell

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Bacteria

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Create experiences with your content

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Engage and surpriseyour audience

Make your audience remember the message

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TABELA COM REGISTO DE RESULTADOS

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Remember to add animation! Capture your audience's attention with your content and choose the ideal effect by selecting the element and clicking on the Animation icon that appearsjust above.

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Do you need more reasons to create dynamic content? Well: 90% of the information we absorb comes to us through sight, and we also retain 42% more information when the content is moving.

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Remember to add animation! Capture your audience's attention with your content and choose the ideal effect by selecting the element and clicking on the Animation icon, which appears right above.

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Do you need more reasons to create dynamic content? Well: 90% of the information we assimilate comes to us through sight, and we also retain 42% more information when the content is moving.

Here you can put ahighlighted title

Visual content is a cross-cutting, universal language, like music. We can understand images from millions of years ago, even fromother cultures.

Here you can put ahighlighted title

Remember to add animation! Capture your audience's attention with your content and choose the ideal effect by selecting the element and clicking on the Animation icon, which appearsjust above.

Here you can put a highlighted title

Do you need more reasons to create dynamic content? Well: 90% of the information we absorb comes to us through sight, and we also retain 42% more information when the content moves.

Here you can put a highlighted title

Do you need more reasons to create dynamic content? Well: 90% of the information we absorb comes through sight, and we also retain 42% more information when the content is moving.

Here you can put ahighlighted title

Visual content is a cross-cutting, universal language, like music. We are capable of understanding images from millions of years ago, even from other cultures.

REGISTO FOTOGRÁFICO

Fig 1. Cilindros de batata, todos com o mesmo diâmetro e comprimento.

Fig 2. Os cilindros são colocados em tubos de ensaio, cada um com soluções de sacarose com concentrações diferentes.

Fig 3. Os cilindros são retirados dos tubos após 48h e é possível observar diferenças entre eles.

CONCLUSÃO

Com esta atividade, conclui-se que a osmose é o movimento de água através de uma membrana celular. Nos tubos 1, 2 e 3 verificou-se um aumento da massa final em relação à inicial. Isto indica que o meio externo era hipotónico em relação ao meio intracelular da batata, provocando a entrada de água nas células. Nos tubos 4 e 5 verificou-se uma diminuição de massa, bem como uma redução no comprimento e diâmetro. Estes resultados demonstram que o meio externo era hipertónico, forçando a saída de água das células. Para concluir, os resultados demonstram os princípios teóricos da osmose, provando que o potencial de água nas células é influenciado diretamente pela concentração de soluto no meio envolvente.