The PCAT
Practice Questions

1. Enzymes catalyze reactions by changing the
   1. activation energy.
   2. ΔH.
   3. ΔS.
   4. average kinetic energy of the reactants
   
   
   
2. At two independently assorting loci, a man has the following genotype: GgHH. He marries a woman with the genotype ggHh. What is the probability that they will have a child who has the same genotype as the father?
   1. 0
   2. 1/8
   3. <</li>
   4. =
   
   
   
3. The thylakoid membrane sacs are organized into stacks called
   1. stroma
   2. grana
   3. chloroplasts
   4. none of the above
   
   
   
4. Which of the following will be the most electrically conductive?
   1. sugar dissolved in water
   2. salt water
   3. salt dissolved in an organic solvent
   4. an oil and water mixture
   
   
   
5. FILTER : IMPURITY :: EXPURGATE :
   1. obscenity
   2. whitewash
   3. perjury
   4. explanation
   
   
   
6. What is the percent composition by mass of oxygen in NaOH? (atomic weights: Na=23, O=16, H=1)
   1. 2.5%
   2. 10%
   3. 40%
   4. 60%
   
   
   
7. Which of the following cells does not have a nucleus?
   1. leukocyte
   2. epithelial cell
   3. erythrocyte
   4. sperm
   
   
   
8. Frozen vegetables usually cost 19 cents a package. They are on sale at 6 packages for 90 cents. How much will you save if you buy 2 dozen packages at the sale price?
   1. $2.25
   2. $1.10
   3. $1.00
   4. $0.96
   
   
   
9. If 2a - b = 1, and 4a + b = 17, then a =
   1. 8/3
   2. 3
   3. 6
   4. 8
   
   
   
10. PARAPHRASE : VERBATIM :: ESTIMATE :
    1. description
    2. precise
    3. apt
    4. valid