The human body generally forms antibodies ("immune chemicals") to foreign substances detected in the blood plasma or in interstitial spaces within a short time. Explain why the malaria organism, unlike "short-lived" influenza and other infections, can survive in the human host to cause recurrent chills and fevers for years.
What will be an ideal response?
The malarial parasite has two hosts, both the mosquito and humans. In humans, the parasite spends most of its time inside liver and red blood cells, hiding from the immune system. Some species may remain dormant in liver cells for extended periods of time.
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Turner syndrome is not associated with intellectual disability
a. True b. False
Which biome contains the largest tree species in the world?
A) coniferous forest B) deciduous forest C) tropical forest D) arctic forest
All of the following are problems in the management of antibiotic usage, except
A. the selection of antibiotics based on results of appropriate antibiotic susceptibility testing. B. the sale of many antibiotics over-the-counter in foreign countries. C. the use of antibiotics for upper respiratory viral infections. D. extensive use of broad-spectrum drugs for minor infections. E. There are no exceptions here. All of these are challenges in the management of antibiotic usage.
Sugar and salt act as preservatives by
A. inhibiting bacterial enzymes. B. producing oils that inhibit bacterial growth. C. inhibiting DNA replication. D. drawing water out of microbes. E. killing endospores.