Describe and explain how the structure and properties of phospholipids help to maintain the structure and function of cell membranes.

Answer the questions using the structures below as reference:     i) Which structure(s) is/are saturated? ii) Which lipid(s) has an

Define, Compare and Contrast Euchromatin and Heterochromatin with respect to their structure and function in the cell.

Complete each of the questions below by referring to the structures shown: i) Which of the sugars shown are Ribose? ii) Which of the sugars shown is a reducing sugar? iii) Of the sugars as shown, which would have a

For a certain reaction: reactants –> products.  Ea is 85 kJ/mol. If the rate constant for the reaction is 3.3 x 10-3 s-1 at 25ºC, what is the rate constant at 30ºC?  

Fill in the blanks with the correct term: This structure is known as:   The foundational molecule for steroids is The carbon location on a steroid most often modified is Anabolic steroids are often synthetic versions of  

Match each type of RNA to its purpose:  

In a relaxed B form of DNA there are base pairs per turn of the helix.  Therefore the linking number of a strand containing 350 bp would be .  The type of enzyme that can relax a supercoiled DNA strand is called a .  In the packing of DNA into Chromosomes, The DNA is first supercoiled around and then further packaged into a . Finally, the structure is further condensed into before being duplicated into a chromosome.   NOTE: Only 1 word or number per blank please.

For each of the questions below use the following structures as reference:   i) Which structure shown is Cytosine? ii) Which structure shown would normally be paired with structure B? iii) Which structure(s) shown is purine? iv) Which structure would normally be paired with structure D? v) Which structure is NOT found in RNA?

For the reaction:  IO3-1 + 5I-1 + 6H+1 –> 3I2 + 3H2O. If d/dt  = 3.0 x 10-3 M/sec.  What is the rate of disappearance of H+1 in M/sec?