Biology Lab Report

Biology Lab Report - Enzymes: Digestion as a Model System...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Enzymes: Digestion as a Model System Bryan Gaddy Section 14 October 10, 2006
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Enzymes: Digestion as a Model System Bryan Gaddy Abstract The objective of this experiment is to learn to measure the digestion of a complex carbohydrate. Another objective is to investigate the effect of an environmental factor (pH) on the rate of digestive activity. Starch was placed in two test tubes along with water in one and amylase in the other to test the digestion of the starch over time by the amylase. Acidic pH hindered the digestion and the basic pH change was a catalyst to the digestion process. Introduction Enzymes are proteins that are biological catalysts: they greatly increase the rate of a chemical reaction but are not themselves changed during the process (Stratton 2005). Starch is a storage polysaccharide in plants consisting entirely of glucose (Campbell 2006). The amylase in human saliva catalyzes the hydrolysis of starch (Sardesai 2003). Iodine is an indicator of starch and turns the liquid either blue (presence of starch) or brownish/yellow (no starch presence). Does pH of the environment affect the digestion rate of starch? The base will speed up the digestion of starch while the acid, such as in the human stomach, will not only slow but almost completely inhibit the digestion of the
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

Biology Lab Report - Enzymes: Digestion as a Model System...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online