Question

2 multiple choice 1 point examine the ph data in tables 1 and 2. table 1: human organs and average ph organ ph stomach 1 - 3 intestine 6 - 8 mouth 6 - 8 table 2: common enzymes/substrates and optimum ph enzyme optimum ph substrate pepsin 1 - 2 protein lipase 4 - 5 lipids amylase 7.2 - 7.4 starch what can be inferred about the effectiveness of enzymes? enzymes do not have specific substrates and work best in any ph. enzymes do not have specific substrates, so they work best within a small range of ph. enzymes have specific substrates, so they work best within a small range of ph. 3 multiple choice 1 point scientists examine the structure of an organic molecule and identify phosphate groups, sugar molecules, and nitrogenous bases. which molecule were they examining? nucleic acid lipid protein 4 multiple choice 1 point what relationship exists between amino acids and proteins? proteins are made up of amino acids. amino acids are larger molecules than proteins. amino acids form when proteins bond together.

Explanation:

Question 2:

Enzymes are specific to certain substrates and have an optimal pH range for maximum activity as shown by different optimum pH values for pepsin, lipase and amylase in Table 2.

Question 3:

Nucleic acids are composed of phosphate - sugar - nitrogenous base units. Lipids and proteins do not have this specific combination.

Question 4:

Proteins are polymers made up of amino - acid monomers.

Answer:

Question 2: Enzymes have specific substrates, so they work best within a small range of pH.

Question 3: nucleic acid

Question 4: Proteins are made up of amino acids.