Science Lab Questions Flashcards
Why was NaOH, or sodium hydroxide, added to the phenol solution used in the fat digestion experiment?
Sodium hydroxide was used because it is a base, and would keep the phenol solution red when there was no acids introduced.
Which vial in the bile/lipase experiment digested the most triglycerides of the milk into glycerol molecules and fatty acids?
The vial containing equal amounts of bile and lipase digested the most of the triglycerides because the bile emulsified the fat, making it much easier for the lipase to enter the solitary fat molecules and break them apart.
What does the term “emulsification” mean?
Emulsification is what bile does to groups of fat molecules. It breaks up fat globules into solitary fat molecules, therefore increasing their surface area.
What is the function of lipase in fat digestion?
Lipase is an enzyme which physically digests fat molecules, and breaks them apart into glycerol and fatty acid molecules.
What happened in the vial containing only bile?
The vile containing only bile digested none of the fat molecules found in the milk.
What happened in the vial containing only lipase?
The vile containing only lipase digested some of the fat molecules found in the milk.
What happened in the vial containing equal amounts of bile and lipase?
The vile containing both bile and lipase digested nearly all of the fat molecules found in the milk.
What happened in the vial containing more bile than lipase?
The vile containing more bile than lipase digested about half of the fat molecules found in the milk.
What happened in the vial containing more lipase than bile?
The vile containing more lipase than bile digested about half of the fat molecules found in the milk.
How would the body be affected if it could not release bile?
Without bile to emulsify fat globules, it would take a much longer time for lipase the fat. This may lead to more fat being stored elsewhere, which can be very dangerous for the body.
