Chyme is squirted from the stomach into the duodenum and then enters the small intestine. In the small intestine chyme is mixed with a digestive juice from the pancreas called pancreatic juice. Bile, which is made in the liver, is also mixed with chyme. The bile helps lipase break down fats (butter and part of the beef) into fatty acids and glycerol. The chyme is then pushed along the small intestine by peristalsis.
The stomach, a large muscle sack, contains three sets of glands which produce gastric fluids. One set produces mucus which coats the food, making it slippery, and it protects the stomach walls from being digested by its own secretions. The second set of manufactures hydrochloric acid, which aids in the breakdown of proteins in the beef patty in the hamburger. About four hours or less after the food has been mixed with all the gastric juices in the stomach forming a thick liquid called chyme. Most digestion, as
Next she used a thermometer to test the temperature of the vacuum packed packages of ground beef, which was 40° F (4° C). Then Alyce used the same thermometer to measure the temperature of the fresh salmon. The salmon was on ice, although it seemed as though much of the ice had melted. The internal temperature of the salmon was 43° F (6° C), and the flesh sprung back after she touched it. She accepted the ground beef and the salmon and
The cooked starch acts as the food, which the caterpillar would eat, and the alpha amylase, which is a digestive enzyme common in saliva, is stirred with it to simulate the chewing and mixing of food and saliva which constitutes the first step in the digestive system. Next two pieces of dialyses tubing were prepared by clamping one end of each piece of tubing shut with a clamp, and twisting the other end until it opens. For the purpose of the experiment, the tubing will represent the intestine of the caterpillar.Continuing on, a clean pipette was used to transfer four pipettes worth of the starch and alpha amylase solution into one of the pieces of tubing, while four pipettes of plain starch was added to the other in order to form a control. Next, two large beakers were filled two thirds of the way with distilled water. Four droppers worth of Lugol’s reagent was added two each beaker.
To get mass of food burnt, I subtracted the initial mass by the final mass. I then repeated these steps for the other two samples making sure to clean and dry the beaker each time. I got the heat energy gained by multiplying the ΔT by the mass of the water and 4.184 J/g°C. Then I calculated the heat energy per unit mass by taking my heat energy gained and dividing it by the mass of food burnt to get Joules/ g. To get the Cal of the sample I took the J/g and divided it by 4.184 and then divided that answer by 1,000 to get my Calorie. Observations: Marshmallow: I noticed that the marshmallow caught fire pretty quick.
These values can be determined by an apparatus which is called calorimeter. For every food that organisms consume, the fuel value of the food can be measured by a calorimeter. Likewise one could also use the calorimeter to find out the unknown metal. Purpose The purposes of the lab are to identify the unknown metal and calculate the enthalpy change for the reaction in kJ/mol HCl by using a simple coffee-cup calorimeter. Heat is released when combustion occurs in the calorimeter, causing a rise in the temperature of the water.
Ingredients: • 1/2 pound stew beef, or round steak cut in cubes • 1 can carrots, drained • 2 small potatoes, quartered • 4 cubes beef bouillon or beef flavor granules or base • 1 tablespoon Italian herbs • 2 cups water Preparation: Put all ingredients in the slow cooker/Crock Pot. Add water and turn on Crock Pot on LOW for 8 to 9 hours. Thicken with a mixture of flour and a little cold water, if desired. Taste and adjust seasonings. |CROCK POT BEEF STEW | | |[pic] | |Read more
The Co2 becomes warm waves of air, which are then warming the globe. The car exhaust travels up into the atmosphere and leads to depletion of the ozone layer. In years to come, global warming will melt glaciers and the water level will rise and cause flooding. Warmer temperatures could decrease the fish population. Animals that depend on fish for food, like polar bears and penguins could starve.
The test tube that showed signs of change was the test tube that contained I2 & H, which turned dark red and had some strong odor and did dissolved. I think it would be a chemical change because it showed that it dissolved and had an odor to it. 5. Was the reaction in Test 2 a physical or chemical change? Why?
Fill the pot with 6 to 8 cups of water, cover and bring to a broil over medium-high heat during 15 minutes, after that reduce the heat until the meat is completely cooked and let it cool at room temperature, next begin shredding the meat into fine treads. To prepare the chili sauce: In a large saucepan boil the red chili for about 10 to 15 minutes or until softened. Drain and put the chilies, garlic and salt in a blender and blend well, next in a large saucepan cook over low heat for 10 to 15 minutes, and then combine the pork with the chili sauce. The next day you can prepare the masa and the corn husks. This not take a long time, and is not to complicated, with the other ingredients ready the process will be faster but a little