Lab Questions:
1.
Positive results were shown in various ways
during the 3 tests we conducted on Friday. For the test for lipids (fats), a
positive result is shown as a grease stain on paper. With that test, the butter
and cupcake showed to be positive. For the starch test, a positive result is
shown as blackening of whatever you are testing. Positive foods were, bread,
and the cupcake. For the simple sugar (glucose) test, positive results for
glucose turned orange.
The building block of
starch is glucose.
2.
The building blocks starch molecules are made up of are: glucose molecules.
3.
I think that Thomas and Josh
achieved these results because carbohydrate molecules are pretty big and take
more time to break apart. Since they left the substance in the water for
longer, the carbohydrates were given more time to break apart.
4.
The
death of an apple: Starting with the mouth, there is physical digestion. Your teeth
break down your food while salivary amylase breaks it down. Your food is chewed
and called a bolus. Using peristalsis, the food in moved through your
esophagus, and into your stomach, passing through the cardiac sphincter. In your stomach you have HCl and pepsin,
which turns into a substance called "chyme." The pancreas, liver, and gall bladder are
accessory organs. The pancreas creates pancreatic juice with contains
pancreatic amylase, lipase, trypsin, and sodium bicarbonate. Pancreatic amylase
breaks down starch; trypsin breaks protein into peptides; lipase breaks down
lipids into glycerol and fatty acids. The liver creates bile, and it is then
stored in the gall bladder. Chyme enters the small intestine through the
pyloric sphincter. The first 25 cm of the small intestine is called the
duodenum, which creates small intestine juice. Bile is also released into the
duodenum. The rest of the small intestine absorbs nutrients such as: glucose,
amino acids, and fatty acids. Chyme continues through small intestine, and then
reached large intestine. The large intestine absorbs H2O and contains bacteria
E. Coli. Once through the large intestine, the Chyme turns into feces. Feces
collect and stores in the rectum, and eventually releases into the world to be
flushed down the toilet.
