Photosynthesis utilizes light energy to create carbohydrates from carbon dioxide and water.  Write the equation for photosynthesis (make sure you balance the equation).  Where does the oxygen that is generated during photosynthesis come from?  Where does the water that is generated during photosynthesis come from? [2 pts]

Given the following equilibrium: N2O4 2NO2 At 298K the equilibrium constant is 0.113. In a certain experiment the initial pressure of N2O4 is 0.453atm and the initial pressure of NO2 is 0.122 atm. Calculate the delta G of the reaction and predict the direction in which the reaction will proceed spontaneously to reestablish the equilibrium. Note of you solve for the direction using the equilibrium expression you still have not determined Delta G of the reaction so you will only get 7  points.

Following a fracture of the skull base, a patient complains of numbness in the skin overlying the chin and lower jaw, and extending up into the temporal region-anterior to the external ear. Damage to which one of the following would best account for this patient’s numbness?

What is photorespiration, what does it do, and why would a C3 plant use it? [1.5 pts]

A sample weighs 8 grams and has undergone 3 half lives. What did it originally weigh?

A patient who recently had the tip (apex) of her tongue pierced (see image) complains of persistent pain and redness in and around the piercing site. You make a diagnosis of bacterial infection secondary to the piercing procedure. Based upon the location of the infection, which of the following lymph nodes would the infection most likely spread to first?  

During a procedure to biopsy lymph nodes from the mid-jugular chain, a surgeon accidentally cuts the internal laryngeal nerve. Which of the following is most likely to occur as a result of this action?

A patient is diagnosed with a tumor in the apex of his left lung (Pancoast tumor). The tumor mass is growing through the superior thoracic aperture, and is putting pressure on structures in the base of the neck. Physical examination reveals that the patient’s left pupil is much smaller than his right pupil, and his left upper eyelid is somewhat droopy. Based upon these findings, which one of the following structures is most likely to have been injured by the tumor?

Following recovery from a knife wound to the buttock (gluteal) area, a patient complains of difficulty walking. Physical examination reveals that the patient can stand upright on his left foot while his right foot is lifted off of the ground. However, when he attempts to stand on his right foot and lift his left foot off of the ground, he is unable to maintain his balance, and he falls to his left side. You recognize this as Trendelenburg Sign. In this patient, which one of the following nerves was most likely damaged?

Radioactive Cu-64 decays with a half life of 12.8 days. If you began with 445. g of Cu-64, how much would be left after 30 days?