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People who are diagnosed with lactose intolerance lack sufficient amounts of the enzyme lactase which is responsible for breaking down lactose.  If lactose is not able to be broken down, it will not be able to diffuse into the blood from the intestine and as a result can create significant abdominal discomfort.  Lactose, shown below, represents which type of sugar?   

The enzyme alpha-amylase catalyzes the first step in the process of breaking food down into molecules that can be utilized for energy in the body.  Alpha-amylase is primarily found in the

The is the main function of enzymes within a cell?

Write the molecular formula for a compound formed between Potassium ion and a Sulfide ion.  Use the periodic table below.  Potassium has the symbol K, Sulfur has the symbol S and remember to use the text editor for subscripts or superscripts as necessary.   

For a patient with Type 1 diabetes, the immune system attacks the pancreas and the person is not able to produce insulin. Based on what you know about GLUT transport proteins, briefly explain why this lack of insulin prevents glucose from entering a cell to be metabolized.

Gastric Acid, also known as stomach acid, is a very strong digestive fluid composed primarily of hydrochloric acid (HCl).  If the [H3O+] of gastric acid is 0.063 M, what is the pH of this solution?  Your answer should have 2 significant figures. 

Ammonia decomposes into nitrogen and hydrogen gases by the following equation: NH3 (l)

Detergent molecules consist of a small polar group and a long nonpolar tail.  These molecules are able to trap grease and help to wash it away because in water, they create spheres that are polar on the outside and nonpolar on the inside.  These spheres are known as

By the time carbohydrates have passed through the stomach and intestines, they have been broken down into single sugars such as glucose.  At the same time fats that pass through the stomach and intestines have been broken down into fatty acids.  The image below shows various examples of fatty acids.  Briefly describe why glucose can diffuse directly into the blood and fatty acids cannot.     

Which type of reaction is shown here?