GS102 GU Lintro to Life Science quiz 1 - 2218

Solution Detail
Price: $8.00
  • From: ,
  • Posted on: Sun 18 Mar, 2012
  • Request id: None
  • Purchased: 0 time(s)
  • Average Rating: No rating
Request Description
  1. Explain the term ecosystem. Provide examples to illustrate what may compose an ecosystem.

 

2. Provide an example of a hydrophobic material. What makes a material hydrophobic?

 

3. What are similarities and differences between a monosaccharide and polysaccharides?

 

4. Describe four attributes of a living organism.

 

5. What are the four most abundant elements found in living systems? What role does each element play?

 

6. Identify and describe the three important parameters of microscopy.

 

7. Compare and contrast the similarities and differences between the two types of electron microscopes, scanning electron microscopes and transmission electron microscopes.

 

8. Explain the differences between the three types of solutions and their impact on a cell; isotonic, hypertonic, and hypotonic.

 

9. Identify the two properties that represent all cells.

 

10. Compare and contrast the differences between prokaryotic and eukaryotic cells.

 

Solution Description
  1. 1.        Explain the term ecosystem. Provide examples to illustrate what may compose an ecosystem.

 

An ecosystem is comprised of all living things in a particular area.  For example, in the jungle, there are a number of living organisms (i.e. flowers, plants, grass, animals, insects, water sources which keep all of the organisms alive).  These are all things needed in order to keep the jungle “alive” and make its ecosystem differ from others such as the desert. 

 

  1. 2.       Provide an example of a hydrophobic material. What makes a material hydrophobic?

 

An example of a hydrophobic material would include the fat in hamburger meat.  What makes it hydrophobic is the fact that it repels against water.  For example, if you have ever messed with raw hamburger meat (meatloaf, patties), you will notice when you try to wash your hands that the fats from the meat do not easily wash off with water.  A soap and scrub is what removes the fat, not the water. This is attributed to the nonpolar covalent bonds which share electrons almost equally.

 

  1. 3.