Which of the following statements about TSEs (transmissible spongiform encephalopathies) is false?
A. Viroids are the likely cause of TSEs.
B. The incidence of Creutzfeldt-Jakob disease in humans increased after an outbreak of mad cow disease in England, suggesting that mad cow disease may be transmitted to humans.
C. TSEs include scrapie in sheep, mad cow disease, chronic wasting disease in deer and elk, and kuru and variant Creutzfeldt-Jakob disease in humans.
D. TSEs do not seem to be affected by treatments that would eliminate nucleic acid-based diseases.
E. Infectious TSE preparations do not seem to contain DNA or RNA.
Answer: A
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a. Heart b. Liver c. Spleen d. Lung
Which of the following is not an inoculating tool?
A. Loop B. Swab C. Petri dish D. Needle E. Pipette
The physical expression of these alleles in an individual is called the _______.
Fill in the blank(s) with the appropriate word(s).
When heart valves do not close fully and a turbulence is created within the heart, this can be heard using a stethoscope and is known as
A. a lub dub. B. atherosclerosis. C. a heart murmur. D. a major heart defect.