One of the Mc1r gene mutations you identified in the lab was a silent mutation. What was the contribution of this mutation to the mouse fur color?

You place a drop of blood into a solution and observe it with a microscope. As you watch, the red blood cells expand and begin to lyse. You can correctly conclude the solution you used is _____ relative to the blood cells.

The movement of water from high concentration of water to low concentration of water across a semipermeable membrane is best defined as ______.

A saline IV solution (0.9% salt) for re-hydrating patients is isotonic to human blood. This means human blood is ______ salinity.

Section H-Passato Prossimo with essere-Complete each sentence with the “Passato Prossimo” of the verb in parenthesis.    50-Questi ragazzi _____________________________(nascere) nel 1980.  

72-Tu ________________________(potere) cambiare la prenotazione. (passato)

G-Indicate the suffix of the following words-Choose among the following suffixes:-ello/a, -etto/a, -ino/a, and -uccio/a. Always write the definit4e article in front of the word.   48-the little hand-

46- Le ragazze_______________________(potere) uscire stasera ma erano stanche (tired). (Condizionale Passato)        

48-Anna____________________________(aprire) la porta per me stamattina.

Section F-l’Imperfetto.  Complete the following sentences using the “l’Imperfetto” tense of the verbs in parenthesis.  42-Da piccolo, mi ________________ (fare) spesso male lo stomaco.