Which two hepatitis viruses are generally acquired in a similar manner?
A. HBV and HBC
B. HBA and HBV
C. HBA and HBC
D. None of the viruses are acquired in the same manner.
Answer: A
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Which of the following statements about single nucleotide polymorphisms (SNPs) is correct? (Choose all that apply)
A. For some disorders, multiple SNPs plus environmental factors are necessary in order for the disorder to present itself. B. Genotyping SNPs instead of sequencing entire genomes allows researchers to find correlations between genetic risk factors and disease. C. SNPs are useful in the diagnosis of a disease but not in the prediction of an individual's risk for acquiring that disease. D. Individuals who are heterozygous for the S allele in the ?-globin gene are more likely to develop sickle-cell anemia than individuals who are homozygous for the S allele in the ?- globin gene. E. The presence of an SNP in an organism's genome when compared to the "standard" genome of that organism means that a disease condition will develop.
Match the following items with the correct phrases.
_______1. A ringworm infection of the scalp, eyebrows, and eyelashes _______2. An infection of the palms of the hands and, less commonly, the neck and feet caused by Hortaea werneckii _______3. An infection of scalp hair and, less commonly, eyebrows and eyelashes caused by Piedraia hortae _______4. An infection of moustache, beard, pubic, and axilla hair, usually caused by Trichosporon beigelii _______5. A ringworm infection of the soles and between the toes A) Black piedra B) White piedra C) Tinea nigra D) Tinea capitis E) Tinea pedis
The eggs of Paragonimus mexicanus measure approximately 80 µm by 40 µm, are unembryo-nated and operculated, and have thick shells that are brownish-yellow. An individual with this infection has most likely traveled to which endemic area?
a. Japan b. Africa c. New Guinea d. South America
An element is
a. a pure substance that can be broken down to another substance. d. an atom with an unstable nucleus. b. a pure substance that cannot be broken down to another substance. e. an atom with positive electrons. c. the smallest unit that has properties of a given element.