Is there life in there? video experiment - observations These observations accompany our video use them for your own analysis – Sample A Sample B Sample C Visual inspection Small, similar grains, Mostly small Mixed grains, dark colour grains, some larger some larger and grains of lighter white colour Response to hydration No change observed Gas produced, fast Repelled water, at first then some particles slowed. Chemical expanded and reaction? floated Reducing sugar test Bright blue, no Bright blue, no Cloudy, murky sugar present sugar present blue Biuret test for protein No change No change Purple, considerable colour change, protein present Ethanol test for lipids Clear, no lipids Clear, no lipids Cloudy, lipids present present present Iodine test for starch Yellow, no starch Dark brown/black, Black, starch present starch present present
Is there life in there? video experiment - observations These observations accompany our video – use them for your own analysis Sample A Sample B Sample C Visual inspection Small, similar grains, dark colour Mostly small grains, some larger grains of lighter colour Mixed grains, some larger and white Response to hydration No change observed Gas produced, fast at first then slowed. Chemical reaction? Repelled water, some particles expanded and floated Reducing sugar test Bright blue, no sugar present Bright blue, no sugar present Cloudy, murky blue Biuret test for protein No change No change Purple, considerable colour change, protein present Ethanol test for lipids Clear, no lipids present Clear, no lipids present Cloudy, lipids present Iodine test for starch Yellow, no starch present Dark brown/black, starch present Black, starch present
Is%20there%20life%20in%20there%20video%20observations.docx