Antibodies against streptolysin O, hyaluronidase, and DNase B are measured in the diagnosis of which disease?

A. Streptococcal pharyngitis
B. Acute rheumatic fever
C. Rheumatoid arthritis
D. Systemic lupus erythematosus


Ans: B. Acute rheumatic fever

Biology & Microbiology

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This mammal has forward facing eyes, can

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With __________, a chemical substance is passed

from organisms at each trophic level to those above and becomes increasingly concentrated in body tissues. Fill in the blank(s) with the appropriate word(s).

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During which cell cycle phase(s) are chromosomes composed of two DNA molecules?

A) G2 B) G1 C) anaphase D) Answers (A) and (B) are correct. E) Answers (A), (B), and (C) are correct.

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Enteric hepatitis is fatal for 20% of people in which of the following groups?

A) infants under the age of 1 year B) teenagers C) young adults D) pregnant women E) elderly men

Biology & Microbiology