Amylase is an enzyme found in saliva that is capable of breaking down starch into glucose molecules for metabolism. Humans have amylase in their saliva, and it is considered one of the first metabolic processes we carry out in digestion. When we consume some starchy foods, they often begin to taste sweet with chewing as the glucose sugars begin to be released by the amylase reaction with starch. In the following image, we tested a students saliva for the presence of amylase. Step 1: A starch solution was added to each of the three test tubes. Step 2: From left to right in the picture
Essential nutrients
These are the organic compounds present in the food that provide nourishment essential for the development and growth of our body. Nutrients not only provide us with the required energy to carry out various biological processes but are also the building blocks for repair and growth in our bodies.
Vitamins
The vitamins are organic molecules required in low concentration for the proper functioning of the body. They cannot be generated in the organism and are taken into the body through the diet. The lack of proper vitamins results in diverse deficiency disorders. They are thus called essential nutrients. The important vitamins are vitamin A, vitamin B complex, vitamin C, vitamin D, vitamin K, and vitamin E.
Amylase is an enzyme found in saliva that is capable of breaking down starch into glucose molecules for
Step 1: A starch solution was added to each of the three test tubes. Step 2: From left to right in the picture
![The image depicts three test tubes held in a person's hand, each containing a different liquid. These are labeled as follows:
1. **Spit**: This test tube contains a liquid labeled as "spit." It appears to have a light amber or orange hue.
2. **Commercial Amylase**: This test tube contains a liquid labeled as "commercial amylase," also showcasing a similar amber color to the spit sample.
3. **Water**: The test tube labeled "water" contains a darker liquid, appearing almost black in color.
This setup likely illustrates an experiment involving the enzymatic activity of amylase, which is present in both saliva (spit) and commercially available preparations. The color differences might be indicative of reactions or lack thereof when these substances interact with a substrate possibly used in the experiment. The dark color in the water tube can suggest a control variable where no enzymatic reaction has occurred.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6a767b23-c124-4e33-a8c8-1cb736a4d72e%2Ff66cdcc6-c770-43c9-8880-e1b7f63cdb02%2F1rgvdei_processed.jpeg&w=3840&q=75)
![In the experiment described, a student's saliva was tested for the presence of amylase.
**Step 1:** A starch solution was added to each of the three test tubes.
**Step 2:** From left to right in the picture:
- Saliva added
- Commercial amylase solution added
- Water added
All three tubes were incubated at 37 degrees Celsius for 15 minutes.
**Step 3:** Five (5) drops of iodine were added to each tube. Iodine will turn a dark purple color in the presence of a starch solution.
**Instructions:** Using the results shown and the experiment description, explain the results of each tube.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6a767b23-c124-4e33-a8c8-1cb736a4d72e%2Ff66cdcc6-c770-43c9-8880-e1b7f63cdb02%2Fskfo8fd_processed.jpeg&w=3840&q=75)
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