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At what temp. will a fixed amount of gas with a volume of 175 L at 15C and 760 mmHg occupy a volume of 198L at a pressure of 640 mmHg?
What distinguishes a eukaryotic cell from a prokaryotic cell?Why embryos are an excellent source for stem cells?
Select a molecule. List the atoms that that molecule is composed of and describe the type of bond that holds those atoms together.
How many moles of citric acid are in 1.90 qts of lemon juice *d=1.09 g/ml* that is 6.62% citric acid by mass?
The retrovirus that leads to AIDS a. Has no enveople b. Contains RNA in its genome.
The treatment of multicellular parasites generally consists of a. Penicillin therapy b. Large doses of sulfonamide drugs
Endotoxins are generally produced by a. Fungi b. Gram positive bacteria c. Gram negative bacteria
Solid aluminum hydroxide Al(OH)3 (s) reacts with aqueous sulfuric acid H2SO4 (aq) to produce aluminum sulfate Al2(SO4)3 (aq) and water.
What is the result of scaling the # moles of KOH used in the given procedure by this factor? What volume of 1.4M KOH contains this # moles?
Pennies made after 1982 contain 97% zinc by mass. A student wants to prove this by filing the copper outside the penny until he sees zinc.
Discuss why prokaryotes tend to be small relative to eukaryotic cells. Discuss why size may be limited in cells of eukaryotic organisms bases on their function
One of the most commonly used white pigments in paint is a compound of titanium and oxygen that contains 59.9% Ti by mass.
Please list and describe alternative THREE PARAMETER Models.
Why is it that we can say that ozone in the stratosphere is beneficial to mankind, but ozone at the surface of the earth is harmful to mankind?
List the experimental requirements of Koch's postulates, and explain the exceptions to the requirements.
It also appears that not all of the alum (aluminum sulfate) dissolves in water and therefore limits the max. creation of aluminum hydroxide. Why?
Outline the PCR process and provide an example of its use.Describe five ways of getting DNA into a cell.
How many grams/liter of sulfuric acid in this case would be required to change the pH of the solution from 3.8 to 2.8?
Describe how staining and biochemical tests are used to identify bacteria.Differentiate between Western blotting and Southern blotting.
Name the microbes that produce most of the antibiotics.Identify five modes of action of antimicrobial drugs.
Methane and Oxygen react to form carbon dioxide and water. What mass of water is formed if 3.2g of Methane reacts with 12.8g of oxygen.
What are the differences between prokaryotic and eukaryotic cells?What are the differences between plant and animal cells
How complex organelle structures evolved in eukaryotes.Eukaryotic cells are more complex that prokaryotic cells
Compare and contrast two microorganisms- the virus and bacteria - in terms of the following processes
What is the major criterion for placing bacteria into groups?Which bacteria characteristically lack a cell wall?