High-fructose corn syrup metabolizes to fat in the human body much faster than other sugars, resulting in increased fat gain. Since the fructose is consumed in liquid form, the negative effects on human metabolism are even greater (Barrett). High fructose corn syrup is not digested by the body as easily as natural sugar is. It takes the human body one day to digest natural sugar, while it takes up to four days to digest a serving of high fructose corn syrup. This means that your body is continuously working to digest high fructose corn syrup if the body consumes processed foods or drink soda on a regular basis.
Describe the earliest alcohol thermometers. The alcohol thermometers were used because alcohol was lighter then mercury, and expands much more with heat. These Florentine thermometers were usually several meters high, and wound into spirals. The problem was a lack of a universal temperature scale. 7.
Marshmallows and Balloons Reveal a Change in Volume Due to Increasing and Decreasing Pressures Chemistry Period 1 20 February 2013 Chemistry- Per.1 20 February 2013 Marshmallows and Balloons Reveal a Change in Volume Due to Increasing and Decreasing Pressures INTRODUCTION Pressure can define the amount of volume in an object depending on how much is used, hence Boyle’s Law. Some scientists have tried to understand the different ways that gases work. Boyle is one of the scientists that experimented with gases; he states that whenever the pressure of a gas increases, the volume of the gas will decrease, and vise versa. Demonstrated in Mr. Squiddy’s demo, when the bottle was squeezed he would float down and when it was released he would float back up. Some might think that by squeezing the bottle, Mr. Squiddy would go up with the water however, he would go down due to the pipette being used.
Therefore, we hypothesized that fructose, which is a 6 carbon sugar, will be likely to ferment more readily than ribose, which is a 5 carbon sugar, when in the presence of yeast. Because this sugar is structured with the hydroxyl group and oxygen molecules flipped on the fourth carbon of the carbon backbone, it’s ability to ferment yeast is increased. 6 mL of yeast was introduced to a fermentation flak and combined with 6mL of Arabinose and Galactose. We allowed each of the tubes to ferment for 10 minutes in a 37° water bath. At the end of the designated period of time, observations were made regarding the amount of carbon dioxide bubble present in the top of the fermentation flask.
* Cellulose as a source of chemicals – starch, another polymer of glucose, can be used as an alternative source for petrochemical products but there is more cellulose produced in plants than starch. Each glucose unit of cellulose has 6 carbons atoms joined together, a good starting point in making petrochemicals e.g. ethylene (2 C atoms). However, it is more difficult to break cellulose into glucose than starch due to the many hydrogen bonds in the long near-linear chains of cellulose forming compact fibres. There are two processes to break cellulose into
In the 1950’s, some welders started to use carbon dioxide as a shielding gas as an alternative to the more expensive argon and helium. It proved to be ineffective for welding aluminum and magnesium because it reduced the weld quality, so it is rarely used today. The use of any shielding gas containing oxygen will quickly contaminate the tungsten electrode and should not be used in GTAW. GTAW is a widely used process for welding metal. Its arc is established between the tip of a non-consumable tungsten electrode and the work piece with a shielding gas applied to protect the arc and the weld pool area.
In part C of the experiment, we were to demonstrate osmosis between distilled water and each of the solutions in the dialysis tubes (water, 0.2 M, 0.6 M, 0.8 M, and 1.0 M sucrose all represented by unknown colors). We hypothesized that all of the dialysis bags except water will increase in mass. This is because the bags will be hypertonic to the distilled water solution in the beaker, meaning that there are more solutes and less water than the surrounding. In a hypertonic condition, water is rushed into the cell (or the dialysis tube in this case) in order to dilute the concentrated solution in the cell. Water would not change in mass because it is isotonic to its surrounding.
This would affect the volume of gas captured in the pipette. And with a limited amount of sucrose its possible sucrose wouldnt properly fill in as a source of glucose for cellular respiration. Another source of error would be that we didnt let the burner heat up all the way to the correct temperature so that would affect the outcome massively and significantly. Also when we had 10% sucrose, we only recorded the time two times, compared to the other percentages of sucrose where we had many other trials and times recorded. We also found problems when we had placed clay on the tip of the pipette to seal the air out.
The colour change was monitored over a period of 20 minutes and changes recorded every 2 minutes. The results obtained showed that a colour change occurred in test tubes A to D with no change in colour in test tube E, the colour change was due to the gain of hydrogen “reduction” by the rezasurin as a result of “oxidation” in the respiration process. These results confirm that simpler carbohydrate molecules are oxidised faster in respiration than more complex carbohydrate molecules, the more complex the sugar the longer respiration takes; confirming also that if there is no sugar then there is no respiration. Introduction The process of obtaining energy from food is cellular respiration (Regina Bailey, 2014); this process is key to the cell being able to carry out its function. Respiration has two main methods anaerobic- takes place in the absence of oxygen and aerobic respiration- takes place in the presence of oxygen.
Global warming is an increase in the earth's temperature due to fossil fuels, industry, and agricultural processes caused by human, natural, and other gas emissions. Discuss this statement with respect to the carbon cycle and its environmental effects. In the mid-Cretaceous period, about 100 million years ago, sub-tropical conditions extended from Alaska to Antarctica. The polar ice caps did not even exist. Carbon dioxide concentrations were about five times higher than they are today and the average global temperature was 6 – 8 degrees higher than it is today.