The indirect ELISA test is commonly used to diagnose infections caused by all of the following except ________.
A. HIV
B. hepatitis A virus
C. hepatitis C virus
D. Helicobacter
E. rubella virus
Answer: E
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The major histocompatability (MHC) molecule is important in a T cell's ability to _____
A) distinguish self from nonself B) recognize specific parasitic pathogens C) identify specific bacterial pathogens D) identify specific viruses E) recognize differences among types of cancer
Microphthalmia is a condition that causes chickens to have very small eyes, but it only appears in hens. The condition is autosomal recessive. Microphthalmia is sex-influenced and not sex-limited because
A) it is recessive in males and dominant in females. B) sex-influenced traits affect structures or functions that are present only in males or only in females. C) it is not transmitted on a sex chromosome. D) sex-limited traits affect structures or functions that are present only in males or only in females.
Science is based on
a. faith. b. authority. c. evidence. d. force. e. consensus.
Owl species A has a carrying capacity of 2000, while another owl species B has a carrying capacity of 200. What is the logical conclusion of this?
A) Species A is larger than B. B) Species B uses more resources per individual. C) Species A uses more habitat per individual. D) Species B feeds on A.