Does High Fructose Corn Syrup cause more weight gain than Sucrose (table sugar)?Standards
1.The fundamental life processes of plants and animals depend on a variety of chemi cal reactions that occur in specialized areas of
the organism’s cells. As a basis for understanding this concept: a.Students know cells are enclosed within semipermeable membranes that regulate their interaction with their surroundings.
b.Students know enzymes are proteins that catalyze biochemical reactions without altering the reaction equilibrium and the activities of enzymes depend on the temperature, ionic conditions, and the pH of the surroundings.
e.Students know the role of the endoplasmic reticulum and Golgi apparatus in the secretion of proteins.
g. Students know the role of the mitochondria in making stored chemical-bond energy available to cells by completing the breakdown of glucose to carbon dioxide.
h.Students know most macromolecules (polysaccharides, nucleic acids, proteins, lipids) in cells and organisms are synthesized from a small collection of simple precursors.i.* Students know how chemiosmotic gradients in the mitochondria and chloroplast store energy for ATP production.
9.As a result of the coordinated structures and functions of organ systems, the internal environment of the human body remains relatively stable (homeostatic) despite changes in the outside environment. As a basis for understanding this concept:
a.Students know how the complementary activity of major body systems provides cells with oxygen and nutrients and removes toxic waste products such as carbon dioxide.
c.Students know how feedback loops in the nervous and endocrine systems regulate conditions in the body.
f.*Students know the individual functions and sites of secretion of digestive enzymes (amylases, proteases, nucleases, lipases), stomach acid, and bile salts.
g.* Students know the homeostatic role of the kidneys in the removal of nitrogenous wastes and the role of the liver in blood detoxification and glucose balance.
i.*Students know how hormones (including digestive, reproductive, osmoregula tory) provide internal feedback mechanisms for homeostasis at the cellular level and in whole organisms.
Investigation and Experimentation
1. Scientific progress is made by asking meaningful questions and conducting careful investigations. As a basis for understanding this concept and addressing the content in the other four strands, students should develop their own questions and perform investigations. Students will:
a. Select and use appropriate tools and technology (such as computer-linked probes, spreadsheets, and graphing calculators) to perform tests, collect data, analyze relationships, and display data.
b.Identify and communicate sources of unavoidable experimental error.
c.Identify possible reasons for inconsistent results, such as sources of error or uncontrolled conditions.
d.Formulate explanations by using logic and evidence.
j.Recognize the issues of statistical variability and the need for controlled tests.
k.Recognize the cumulative nature of scientific evidence.
l.Analyze situations and solve problems that require combining and applying concepts from more than one area of science.
m. Investigate a science-based societal issue by researching the literature, analyzing data, and communicating the findings. Examples of issues include irradiation of food, cloning of animals by somatic cell nuclear transfer, choice of energy sources, and land and water use decisions in California.
n.Know that when an observation does not agree with an accepted scientific theory, the observation is sometimes mistaken or fraudulent (e.g., the Piltdown Man fossil or unidentified flying objects) and that the theory is sometimes wrong (e.g., the Ptolemaic model of the movement of the Sun, Moon, and planets).
Students have three groups of rats, 14 in the HFCS, 14 in Sugar, 14 in Water group. Rats are fed lab food (Kaytee brand), as much as they want. HFCS mixed with water in water bottles at 10% solution. High fructose corn syrup is found in the form of Mrs. Butterworth's Pancake syrup, CH brand table sugar mixed with tap water to create a 10% solution. Sugars were mixed and placed in the rats water bottles. . Rats are massed twice weekly and bedding is changed once weekly. Experiment lasts 3 months.Independent variable
Time measured over 3 months time
Mass of Rats- series is 7 groups of HFCS, 7 groups of sugar, 7 groups of Water.
A. Students develop hypothesis for each group of rats.
B. Student read the study Princeton released to study how they set up their lab.
C. Students read opposing view points of Princeton study.
D. Student plan out study including what controls might be needed, data tables created, procedures written out.
Students developed the following procedures:
Analysis & Conclusions
Consuming Fructose beverages increases fat and overweightness and decreases insulin production- Scientific Study
HFCS Scientific Review- refutes connection between HFCS and weight gain
HFCS and memory loss- scientific american article