List the roundworm parasites and use the Internet to learn how they gain entry into the body. Describe that process here.
What will be an ideal response?
Ascaris (ingesting eggs from contaminated food or water); hook worms (larvae penetrate skin such as soles of the feet); Trichinella (eating improperly cooked meat); pin worms (ingestion of eggs dislodged from the skin around the anus of infected individuals, e.g., children); and filarial worms (larvae transmitted by mosquitos) that cause lymphatic filariasis, also known as elephantiasis.
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Upon antigenic stimulation, CD8+ T cells differentiate into helper T cells
Indicate whether the statement is true or false.
The ___ model of human origins is supported
by genetic studies.
a. replacement b. multiregional c. transitional d. relational e. allopatric
Which of the following statements is true?
a. Organs receive either parasympathetic fibers or sympathetic fibers but not both. b. The sympathetic nervous system that supplies an organ will also provide parasympathetic fibers to it. c. Both the sympathetic and parasympathetic have either excitatory or inhibitory effects. d. The sympathetic branch of the sympathetic system usually speeds up the activities of the body. e. All of these are true.
What process typically regulates the enzymes involved in metabolic reactions?
a. entropy capture b. ATP blockage c. feedback inhibition d. substrate inhibition