UNIT 3 j Chemistry 45 S. bcstinguish betwen lactose and lactase and describe wha
ID: 3506298 • Letter: U
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UNIT 3 j Chemistry 45 S. bcstinguish betwen lactose and lactase and describe what happens to lactose in the presence of 6. Environm ental conditions such as heat and low pH can cause proteins to lose their three- dimensional shape. This process is called and results in PART II. Putting It All Together A. Review Questions Answer the following questions using your lecture notes, your textbook, and your lab notes: 1. Why is water such an effective solvent 2. Calculate the pH for a solution with H 1 0+ pH 3. A solution with a pH of 2.0 is how many times more acidic than a solution with a pH of 4.0? Use a chemical reaction to explain why an increase in blood carbon dioxide levels causes the pH of blood to decrease. 4. 5. Summarize the data presented in the graph that you created for part A of Activity 3. Write a chemical equation that describes the buffering of hydrochloric acid by sodium bicarbonate, and explain how the reaction works 6. 7. A test tube contains the followving lactase, water, buffer (pH -2.0), and sucrose. Will digestion of the sucrose occur? Why or why not?Explanation / Answer
ans 5... difference between lactose and lactase
lactose is a disaccharide carbohydrate.the monomer units are glucose and galactose.it is present in milk and give milk a sweet taste.
lactase is an enzyme that break down the lactose.it break the bond between glucose and galactose.it is essential for complete digesion og milk.
if lactase and lactose are put together.lactase will break down thr lactose into glucose and galactose.
ans 6.. environment conditions such as low pH can lead to loss of 3 dimension structure of a protein.the process is called Denaturation of protein and it lead to loss of function of that protein.
part 2..
ans 1...It is water's chemical composition and physical attributes that make it such an excellent solvent. Water molecules have a polar arrangement of the oxygen and hydrogen atoms—one side (hydrogen) has a positive electrical charge and the other side (oxygen) had a negative charge. This allows the water molecule to become attracted to many other different types of molecules. Water can become so heavily attracted to a different molecule, like salt (NaCl), that it can disrupt the attractive forces that hold the sodium and chloride in the salt molecule together and, thus, dissolve it.
ans 2..pH is negative log of H+ concentration
negative log of 1×10-4 is 4
so pH is 4
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