Much of the human digestive process takes place in the stomach and small intestine. Glands secrete enzymes that break down protein chains by chemical reactions. Two important digestive enzymes for proteins are pepsin and trypsin. The
effect of the pH on the activity of these enzymes can be determined by analyzing the data below. Plot the data from the
data tables on the graph below and then analyze the activity of the two enzymes to answer the questions. Use two
different colors for your lines and provide a key. Make sure that your graph has the axes appropriately labeled and has a
descriptive title.
4.0
Table 1: Activity of Digestive Enzymes Pepsin and Trypsin
pH
Activity of Pepsin
рн
% of maximum
0.9
0
1.5
65
5.0
3.0
100
6.5
5.0
20
7.5
5.1
0
9.0
Activity of Trypsin
% of maximum
0
75
100
90
0

Match the descriptions / definitions with the term they best describe 1. three dimensional relationship of the different polypeptide chains in a multisubunit protein or protein complex 2. common folding pattern in proteins in which a linear sequence of amino acids folds into a right-handed coil stabilized by internal hydrogen-bonding between polypeptide backbone atoms. 3. the amino acid sequence of a protein 4. a region on the surface of a protein that can interact with another molecule through noncovalent bonding. 5. three-dimensional arrangement of alpha-helices and beta-sheets within a single polypeptide, typically stabilized by a variety of noncovalent bonds, including ionic and hydrogen bonds, and nonpolar interactions / hydrophobic force. 6. the chain of repeating carbon and nitrogen atoms, linked by peptide bonds, in a protein. 7. common structural motif in proteins in which different sections of the polypeptide chain run alongside each other and are joined together by hydrogen bonding between atoms of the polypeptide backbone. 8. portion of a polypeptide chain that has a discrete tertiary structure of its own and can often fold independently of the rest of the chain 9. regular local folding patterns in a protein, including alpha-helix and beta-sheet a. primary structure b. beta-sheet c. protein d. coiled-coil e. polypeptide backbone f. secondary structure g. side chain h. tertiary structure i. binding site j. alpha-helix k. quaternary structure l. protein domain

What conclusion can be made based on the temperature of soil when the light hits the soil at 0°, 45°, and 90° angles in section 2 of the experiment? did your results support your hypothesis? why or why not?

The picture shows a location in india that is very dry and arid. notice the tall mountains in the background; you can find high amounts of vegetation on the other side of the mountains. which statement is most likely true for this area?