As a part of my breakfast on Day 1‚ I ate a peanut butter and jelly sandwich. The creamy peanut butter provided both protein and fat for my diet while the multigrain bread provided me with carbohydrates. As I take a bite of the peanut butter and jelly sandwich I crush all three of the macronutrients with my teeth. The role of saliva helps moistens the food while a digestive enzyme in the saliva called salivary amylase (ptyalin) helps breaks down the complex carbohydrates mostly contained in the bread
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to Volume ratio in Agar Introduction: What is an efficient way to maximize mass but minimize diffusion time in cell? Answer: An efficient way to maximize mass but minimize diffusion time in a cell is to increase its surface area. If you increase the surface area of a cell relatively to its volume‚ then the diffusion time will decrease. Materials: Agar cubes‚ bromothymol blue- pH indicator‚ vinegar‚ ruler‚ spatula‚ beaker. Methods: I used agar cubes as cell models. The agar was cut into blocks
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How many jelly beans are in a jar? Setting up the paradigm. How do we know there is a God? If anything exists there is a God because you cannot create something from nothing. There had to be an initial force to set the universe into motion. Einstein refers to this force as “the cosmological constant”. This constant corrected Einstein’s theory of relativity to explain the movement of the universe. Originally Einstein believed that the universe was static even though his mathematical theories suggested
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For my science exit project I decided to do a project that revolves around bacteria. I was suggested to do a project where I get a petri dish containing my oral bacteria and see the effects of liquid on my oral bacteria. I was very curious about this topic and wanted to know how the bacteria grows so I gave it a shot. For my project‚ I was told to make an “if and then” hypothesis. My hypothesis was that “If I put orange juice on a petri dish containing my oral bacteria then the bacteria on the petri
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What can speed up the decay of bread? Aims In this activity you are going to think about the conditions that would affect the speed at which bread decays and then design a fair test to investigate one of the. This will help you to understand all the points you need to consider when planning an experiment. Safety If you perform this activity: * Do not taste any food. * Wear gloves when handling food. * Wash your hands when you have finished setting up your experiment. * Your
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In this study‚ three general media will be used for the detection of microorganisms on the equipment‚ personnel‚ raw materials and the finished goods. These are Potato Dextrose Agar (PDA)‚ Plate Count Agar (PCA) and Violet Red Bile Agar (VRBA) under the Univar brand. The amount of each prepared medium or dehydrated medium depends on the number of samples to be tested. PDA is usually used for the presence of yeasts and molds which are the most common food
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I. INTRODUCTION A bookcase‚ or bookshelf‚ is a piece of furniture‚ almost always with horizontal shelves‚ used to store books. It may be fitted with glass doors. A bookcase consists of a unit including two or more shelves which may not all be used to contain books or other printed materials. Shelves may be fixed or adjustable to different positions in the case. In rooms entirely devoted to the storage of books they may be permanently fixed to the walls and/or floor. Bookcases frequently have doors
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Planarians A planarian is a small free-living flatworm. These flat worms are usually found under rocks in fresh water. They are part of the phylum Platyhelminthes and in the class Turbellaria. Planarians are usually zoophagous‚ they feed on small living invertebrates and decaying organisms found in their community. Some planarians could eat segmented worms‚ leeches‚ snails‚ and other small herbivores. Planarians may also be organisms that gain their food energy with the help of decomposing
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LAB REPORT WOODLICE Daan Rijpkema May 2009 T4Y - General Science X Words TABLE OF CONTENTS Aim..........................................................................................................................................................2 Hypothesis...............................................................................................................................................2 Materials ............................................................................
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1. Make sure you label both plates on the bottom‚ with your name‚ date and name of pathogen you have chosen (listed above under materials) Then label numbers 1-5 on one plate and 6-10 on the other as there are 10 disks that need to be placed. Spread out in a circle formation like pictured below (This is the final product; look at this for reference on how to label) Now you are ready to start culturing. Start with one of your plates you can do both at the same time but to avoid making any errors
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