Why did the filter paper discs float to the surface?

Why did the filter paper discs float to the surface?

As the enzyme breaks down the hydrogen peroxide into water and oxygen gas, the bubbles of oxygen collect underneath the filter paper disc and make it rise to the surface of the hydrogen peroxide.

How does this reaction cause the discs of filter paper to lift from bottom of test tube?

As catalase decomposes hydrogen peroxide into water and oxygen gas, bubbles of oxygen collect on the disk. When the density of the combined paper/enzyme/O2 is less than the solution the disc will rise to the surface.

What was the dependent variable in the effect of temperature on enzyme activity lab?

The dependent variable is the rate of the reaction. The independent variable is the concentration of enzyme, the concentration of the substrate, the temperature, and the addition of an inhibitor. Introduction: Enzymes are proteins that carry out chemical reactions.

How does substrate concentration affect catalase activity?

As the concentration of the substrate increases, so does the rate of enzyme activity. As the substrate concentration increases so does the rate of enzyme activity. An optimum rate is reached at the enzyme’s optimum substrate concentration.

What happens when you mix hydrogen peroxide and potato?

Catalase is a common enzyme. It helps change peroxides (which are created in other reactions and aren’t good for living things) into water and oxygen. Most living tissue contains catalase. We can use potatoes to help see catalase work because bubbles of oxygen form when we put potatoes into hydrogen peroxide.

How is catalase extracted from potato?

To make a crude catalase solution, crush about 25 cm3 of the turnip or potato in a mortar and pestle with about 20 mL of cold distilled water. Filter the resulting mash through 2 or 3 layers of cheesecloth, squeeze the cheesecloth gently and collect the liquid. Throw the mash and cheesecloth away.

How does temperature affect enzyme activity lab report?

As the temperature increases so does the rate of enzyme activity. An optimum activity is reached at the enzyme’s optimum temperature. A continued increase in temperature results in a sharp decrease in activity as the enzyme’s active site changes shape. It is now denatured.

How does temperature affect enzyme activity lab?

How Temperature Affects Enzymes. Higher temperatures tend to speed up the effect of enzyme activity, while lower temperatures decrease the rate of an enzyme reaction. At higher temperatures, more molecules collide, increasing the chance that an enzyme will collide with its substrate.

How does the concentration of the substrate in an enzyme controlled chemical reaction change over time?

How does the concentration of the substrate in an enzyme-controlled chemical reaction change over time? The substrate concentration will decrease. Amino acids are linked by peptide bonds with hydrogen bonds between nearby amino and carboxyl groups to give enzymes their two dimensional shape.

Why do potatoes float in hydrogen peroxide?

What enzyme is present in potato?

catalase
This reaction is caused by catalase, an enzyme within the potato. You are observing catalase breaking hydrogen peroxide into oxygen and water.