BOC CHEMISTRY 6TH EDITION (ACTUAL
EXAM) WITH 100+ QUESTIONS WITH VERY
ELABORATED ANSWERS CORRECTRY WELL
ORGANIZED LATEST 2024 – 2025 ALREADY
GRADED A+
A common cause of a falsley increased LD1 fraction of lactate dehydrogenase is:
a. specimen hemolysis
b. liver disease
c. congestive heart failure
d. drug toxicity - ANSWERS-a
The presence of which of the following isoenzymes indicates acute myocardial
damage?
a. CKMM
b. CKMB
,c. CKBB
d. none - ANSWERS-b
In which of the following conditions would a normal levels of creatine kinase be
found?
a. acute myocardial infarct
b. hepatitis
c. progressive muscular dystrophy
d. intramuscular injection - ANSWERS-b
The metabolite 11-nor-etrahydrocannabinol-9-COOH- can be detected by
immunoassay 3-5 days after a single use of:
a. methamphetamine
b. cocaine
c. benzodiazepine
d. marijuana - ANSWERS-d
A 3 year old child was evaluated for abdominal pain and anorexia by a physician.
A CBC revealed a hemoglobin of 9.8 g/dL and basophilic stippling of the RBCs. The
doctor should order further tests to check for poisoning from:
a. arsenic
b. iron
,c. mercury
d. lead - ANSWERS-d
Zinc protoporphyrin or free erythrocyte protoporphyrin measurements are useful
to assess blood concentration of:
a. lead
b. mercury
c. arsenic
d. beryllium - ANSWERS-a
A salicylate level is performed to detect toxicity caused by ingestion of excess:
a. acetominophen
b. aspirin
c. ibuprofen
d. pseudoephedrine - ANSWERS-b
Testing for the diagnosis of lead poisoning should include:
a. erythrocyte protoporphyrin (EPP)
b. urine delta-aminolevulinic acid
c. whole blood lead
d. zinc protoporphryin (ZPP) - ANSWERS-c
, Which of the following elevates carboxyhemoglobin?
a. nitrite poisoning
b. exposure to carbon monoxide
c. sulfa drug toxicity
d. sickle cell anemia - ANSWERS-b
The reason carbon monoxide is so toxic is because it:
a. is a protoplasmic poison
b. comibines with cytochrome oxidase
c. has 200 times the affinity of oxygen for hemoglobin binding sites
d. sensitizes the myocardium - ANSWERS-c
Cocain is metabolized to:
a. carbamazepinne
b. codeine
c. hydrocodone
d. benzoylecgonine - ANSWERS-d
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