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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? [sugar1] ii) Which of the sugars shown is a reducing sugar? [sugar2] 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: [structure]   The foundational molecule for steroids is [steroid] The carbon location on a steroid most often modified is [steriod2] Anabolic steroids are often synthetic versions of [steroid3]  

Match each type of RNA to its purpose:  

In a relaxed B form of DNA there are [blank1] base pairs per turn of the helix.  Therefore the linking number of a strand containing 350 bp would be [blank2].  The type of enzyme that can relax a supercoiled DNA strand is called a [blank3].  In the packing of DNA into Chromosomes, The DNA is first supercoiled around [blank4] and then further packaged into a [blank5]. Finally, the structure is further condensed into [blank6] 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? [structure1] ii) Which structure shown would normally be paired with structure B? [structure2] iii) Which structure(s) shown is purine? [structure3] iv) Which structure would normally be paired with structure D? [structure4] v) Which structure is NOT found in RNA? [structure5]

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

For the reaction below, the partial pressure of A is 0.0105 atm and the partial pressure of D is 34.2 atm. What is the value of Q for the reaction?  In which direction does the reaction need to shift to reach equilibrium? 2A (g) + B (s) ⇌ 2C (s) + D (g)     Kp = 8210   Value of Q = [q]  Shift to reach equilibrium = [shift]    

The following initial rates are obtained at a certain temperature for the reaction A + 2 B –> C + 2D Expt. A (M) B (B) Rate (M/s) 1 0.22 0.16 6.1 x 10-4 2 0.44 0.32 1.2 x 10-3 3 0.44 0.16 6.1 x 10-4   Determine the order of the reaction with respect to each reactant and write the rate law for the reaction.  What is the rate of the reaction when  the concentration of B = 0.24M? Rate Law = [ratelaw] Rate when B = 0.24M is [rate] Put numerical answers in exponential notation using e. Ex. 1.0e-5