QUIZ CORNER

1. Which enzyme is introduced into cells after infection with an RNA tumor virus and is responsible for synthesis of DNA from an RNA template?

   1. DNA polymerase II

   2. RNA-dependent RNA polymerase

   3. reverse transcriptase

   4. DNA ligase

   5. DNA gyrase

2. Which gram-negative organism has been frequently associated with mastitis in cows bedded on sawdust or wood shavings?

   1. Proteus mirabilis

   2. Serratia species

   3. Klebsiella species

   4. Providencia species

   5. Yersinia enterocolitica

3. For which of the 3 classes of nutrients (carbohydrates, proteins, fat) are digestion and absorption most complex and most efficient?

   1. protein

   2. fat

   3. carbohydrate

   4. protein and fat

   5. carbohydrate and fat

4. If you wish to prepare 1 L of a 5% guaifenesin solution in 5% dextrose, how much of each ingredient will the solution contain?

   1. 100 g of dextrose and 100 g of guaifenesin

   2. 5 g of dextrose and 5 g of guaifenesin

   3. 50 g of dextrose and 50 g of guaifenesin

   4. 10 g of dextrose and 10 g of guaifenesin

   5. 0.5 g of dextrose and 0.5 g of guaifenesin

5. Which of the following is the least common congenital heart defect in cats?

   1. patent ductus arteriosus

   2. ventricular septal defect

   3. endocardial cushion defect

   4. pulmonic stenosis

   5. mitral valve dysplasia

6. Throughout history, plague has killed large numbers of people. Which domestic animal is associated with 10% of the human cases of plague today?

   1. dog

   2. cat

   3. duck

   4. cow

   5. horse

7. Which of the following is not associated with diarrhea in horses?

   1. colitis

   2. sand impaction

   3. feed impaction

   4. esophageal impaction

   5. large colon displacement

8. In a swine herd, the prevalence of disease X is 10%. If the test to detect disease X has 90% sensitivity and 80% specificity, what percentage of the pigs in this herd will react positively when tested?

   1. 20%

   2. 27%

   3. 10%

   4. 8%

   5. 15%

9. When auscultating the lung fields of a calf, from which area are abnormal sounds apt to be detected earliest in a case of bronchopneumonia?

   1. dorsal and caudal on the left side

   2. ventral and caudal on the right side

   3. dorsal and cranial on the right side

   4. ventral and cranial on the right side

   5. dorsal and caudal on the right side

10. Pain associated with which condition is not alleviated by a palmar digital nerve block?

    1. navicular disease

    2. bruising of the frog

    3. septic navicular bursitis

    4. puncture wounds of the bar

    5. distal interphalangeal joint arthritis

(See p. 679 for answers.)