Humans acquire infection with Trichinella tissue nematode by ingesting undercooked meat that contains the infective encysted larvae. In which tissue do these larvae encyst?
a. Brain
b. Meninges
c. Myocardium
d. Striated muscle
D
The encysted larvae of the organism Trichinella spp. are ingested. When the undercooked meat is digested in the stomach, the larvae are resistant to the gastric pH and pass to the intestine, where they invade the mucosa. Trichinosis is a disease of the muscle caused by infection with the encysted larvae.
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Atherosclerosis is now known to be a disease of
inflammation. Which of the following oral bacteria can also be involved in this disorder? a. Porphyromonas gingivalis b. Streptococcus mutans c. Lactobacillus spp d. Staphylococcus spp e. all of these
The organelle that produces the majority of the cell’s ATP is the ____
a. ribosome b. lysosome c. mitochondria d. vesicle e. Golgi body
Which of the following is the correct sequence of events in protein synthesis?
A. DNA-tRNA-mRNA-Protein B. mRNA-tRNA-Ribosome-Protein C. DNA-mRNA-tRNA-Ribosome-Protein D. tRNA-mRNA-DNA-Protein
Which of the following infectious particles do NOT have protein in their structure?
A) bacteriophages B) prions C) animal viruses D) viroids E) both prions and viroids