Laboratory Activities Exercise 1: Prefixes‚ Suffixes and Root Words Commonly Used in Biology Protocol: Example #1: Biology = study of life Example #2: Hypotonic = below tonicity Biological Terms Literal Meaning Phagocytosis To eat bag‚ sac‚ condition Chlorophyll Green leaf Zoology Study of animals Haploid Single Diploid Two‚ double Exocytosis Outside cell condition Hypertonic Above‚ over tonic Metaphase Change‚ after phase Unicellular One‚ single pertaining to Multicellular Many pertaining
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are substances that do not dissolve into a true solution‚ such as large protein molecules. The solution that can dissolve a solute is called a solvent. The concentration of solutes in the body fluids is referred to as the osmolality and the term tonicity referrers to the osmolality of a solution. The cells in the body are exposed to three different solutions classified as isotonic‚ hypotonic‚ and hypertonic. Isotonic solutions have the same osmolality as body fluids. They do not change the size
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Calcium can be viewed as the most notable change because of lead’s ability to replace calcium in many of the intracellular regulatory procedures. Calcium is an intercellular mediator that acts either as a signal or a secondary messenger for many functions of the submandibular glands. This decrease in the absorption of calcium is believed to cause the destruction of the mitochondria which causes rapid energy depletion and impedes transportation. This will stop cells from their normal function and
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Baseball‚ hot dogs‚ potato chips‚ and pop. What can be more American than that? The potato chip is the king of salty‚ crunchy snacks. Potato chips originated in New England in 1853 at Moon Lake Lodge in Saratoga Springs‚ New York. The inventor‚ a chef named George Crum‚ was part Native American and part African American and a guide in the Adirondack area. The potato chip was invented when a dinner guest returned his fried potatoes to Chef George Crum because they were not crunchy enough. After returning
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Hypothesis The more hypertonic potato cores are to sucrose solution‚ the more weight potato cores gain. On the other hand‚ potato cores will decrease in weight when it is hypotonic to sucrose solution. Variables: Dependent: The final mass of the potato cores Independent: Concentration of sucrose Controlled: Size of potato‚ time spent in solution‚ amount of solution Method for Collecting Data: We decided to do a range of about 4.84g per piece of potato in each concentration of sucrose
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I am going to investigate osmosis when potato is placed in different concentrations of sucrose. I am aiming to witness osmosis in 5 different concentrations of sucrose. I will use 5 varying concentrations so that I have a wider spread to compare the results‚ and check that I don’t have any anomalies Prediction Osmosis is the process of diffusion of water molecules from a weaker solution into a stronger solution‚ through a semi permeable membrane. The tiny pores in the membrane
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Water Concentration in Potato Cells Formal Lab Report Purpose: The purpose of this lab is to determine the concentration of water in potato cells. Method: To complete this task‚ we will first soak our potato cells in different concentrations of sugar solutions. Before we actually soak them‚ we will need to know the initial mass of the potato cores. After soaking‚ we will need to know the mass of the final core. We will use the data we collect to find the percent change in mass of the cores
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original 1M solution of Sucrose. This is therefore the only thing that is going to be altered as I am investigating how different percentage of water molecules affects the weight of the the potato thus the rate and direction of osmosis. Dependant Variable The dependant variable will be the mass of the potato as this is the variable I will be measuring. From this I can see the change in mass(g) and so work out the amount of water that has moved and the rate of the osmosis in a set time. This can
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Exchange‚ which started mostly after 1492 when Columbus traveled from the Old World to the New World‚ can be defined as the time when various items such as plants‚ technologies and food were carried from the New World to the Old‚ and vice-versa. The potato is a great example of the Columbian Exchange‚ seeing as how it was carried from the New World to the Old World‚ and had a significant impact on Europe‚ as well as other countries from various continents. Potatoes were first known to be grown in the
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that affects the rate of osmosis in a potato: * Time * Temperature * Molar * Sucrose solution * NaCl solution * Concentration of liquid * Age of the potato * Variety of the potato * Potassium‚ K(AQ) Factor Chosen: Different Molar of Sucrose Solution In this investigation I will change the molar of sucrose solution to find the increase or decrease in mass change and also the higher or lower the mass change of the potato chip from its original weight will determine
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