In what way do plants support the existence of many heterotrophic soil organisms? Can you think of soil organisms that do not need presence of plants to survive and what mechanisms do they use to sustain themselves?

The protein collagen has an isoelectric point of pl = 6.60. This is the pH at which the number of positive charges on the protein surface equals the number of negative charges on the protein surface. At which of the following solution pH values will collagen be in solution and at which will it tend to aggregate? pH = 12.89 pH = 4.07 PH = 6.50 Clear All The protein will be in solution. The protein will tend to aggregate.

Give two examples of toxins or enzymes produced by Staphylococcus aureus. Explain the pathogenic significance of each. Why is Staphylococcus aureus considered a pathogen, while Staphylococcus epidermidis is not? How do selective and differential media help microbiologists identify microbes? What might contribute to the misidentification of a microbe when flow charts are used? How do flow charts promote efficiency in the clinical lab?

Triglycerides are composed of three fatty acids bonded to a glycerol backbone. Explore the structures and properties of triglycerides. The carbon-carbon double bonds of triglycerides will react with hydrogen gas in the presence of a metal catalyst such as Pt. This process will convert the unsaturated triglycerides to saturated triglycerides. What quantity in moles of H, gas would be required to convert this triglyceride to a fully saturated triglyceride? O O Question 19.c of 21 Fo Fo Fo 1 4 7 +/- 2 5 8 moles 3 6 9 0 Submit X с x 100 +

The primary use of ingested proteins in the body is to _____.     be broken down into amino acids that are used to build proteins and nucleic acids within the body be broken down to release energy and the unused components are recycled to build new proteins within the body interact with signaling molecules to trigger the building of muscle fibers be converted to starches or sugars, which are more readily accessible forms of energy

X Animals preserve as a form of energy in their bodies. Glucose Fat Starch Cellulose

Is moved into a cell. H₂D Use the following diagram to answer questions 9 to 11 H₂O water particle sugar particle H₂O water particle sugar particle umo ariu carbon dioxide H₂O water partide sugar particle A B C 9) In which diagram(s) does water move into and out of the cell at the same rate? 10) In which diagrams(s) will the cell begin to swell? 11) Which diagram(s) shows what would happen if a cell were placed in salt water?

The name carbohydrate comes from the fact that many simple sugars have chemical formulae that look like water has simply been added to carbon. (The suffix hydrate from the Greek word hydor ("water") means "compound formed by the addition of water.") The actual chemical structure of carbohydrates doesn't look anything like water molecules bonded to carbon atoms (see sketch at right). But it is nevertheless possible to chemically extract all the hydrogen and oxygen from many simple carbohydrates as water, leaving only carbon behind. If you search the Internet for "reaction of sulfuric acid and sugar" you will find some impressive videos of this. Suppose you had  300.g  of ordinary table sugar, which chemists call sucrose, and which has the chemical formula  C12H22O11 . Calculate the maximum mass of water you could theoretically extract. Be sure your answer has a unit symbol, and round it to the correct number of significant digits.

At the end of 2012, global population was about 7.0 billionpeople. What mass of glucose in kg would be needed toprovide 1500 Cal/person/day of nourishment to the globalpopulation for one year? Assume that glucose is metabolizedentirely to CO21g2 and H2O1l2 according to the followingthermochemical equation:

Nitrogen is the number one element required by plants. List 3 functions in plants.