Science Fair Project for Biology

Grade 9 Dear Students, Have FUN and CREATE!!!!!

Student Name / Biology
Sabreen /

1.Are Fingerprint Patterns Inherited?

Fingerprints are used as reliable identification because each person's fingerprints are unique. But are these unique patterns created randomly or are they influenced by genetics?
Rahaf /

Is the Gold in My Jewelry Real?

Have you ever wondered if a piece of jewelry is real gold or if it's just some ordinary metal alloy? It turns out that some metals have a unique property; even in small amounts, they can be toxic to some organisms, including algae, molds, fungi, and bacteria, although it often takes many hours to see an effect. Can this phenomena, called the oligodynamic effect be used to tell whether or not the gold or silver in a piece of jewelry is real? Do bacteria react differently to pure, plated, and non-gold jewelry? Find out for yourself in this unique treasure-testing science fair project!
Mennah /

The Fungus Among Us

To watch apparently dead “sand” come to life. Yeast causes flour to become the bread most of us know. In the simplest step, dry yeast is given water and sugar. It quickly shows that it is alive by foaming. Later, it feeds on the flour and causes the bread dough to rise.

Introduction

Bread is the “staple of life.” Most breads are made with yeast, which is a sturdy fungus that interacts with the grain and sugar to create carbon dioxide, which causes the bread dough to rise. The student can follow the process from the most basic process of causing dried yeast to come to life in a bowl of water, or see it through to edible bread.
Danya /

23. How Do Fears Change with Age?

Although some of us may not like to admit it, everyone's afraid of something. Big dogs, thunderstorms, public speaking, heights: what are you most afraid of? Do you think grown-ups have the same fears as kids? How about first-graders and sixth-graders? Find out for yourself by doing this project.
Maye /

2.Catalase Enzyme Activity

Objective

Student tests the effects of temperature change on the reactivity of the catalase enzyme
Enzymes are proteins that act as biological catalysts.They help chemical reactions proceed more easily in the bodies of organisms.Hydrogen peroxide is produced naturally in organisms, but is very harmful.Catalase and other enzymes help break hydrogen peroxide into water and oxygen gas.The bubbling that you may see if you pour hydrogen peroxide on a cut is the oxygen gas produced from catalase activity.Enzymes, including catalase, have very specific structures that help them bind with their substrate and complete the chemical reaction.Changes in temperature and other environmental conditions can alter the structure of a protein.If an enzyme changes its structure, it may no longer work.In this experiment, the student will work to determine the temperature at which catalase denatures and is no longer active. Raw potatoes and liver will act as the tissue samples.Catalase activity will be estimated based on the amount of oxygen bubbles produced.