What are molecules such as viruses and bacteria that are foreign to the host and stimulate the immune system to react?
What will be an ideal response?
antigens
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Determining the exact nucleotide sequence of a gene or gene fragment obtained from an unknown organism is based on which of the following methods?
a. Hybridization b. Sequencing c. Amplification (PCR) d. Genotypic
Demonstrating the occurrence of interspecific competition during a field study is problematic for all of the following reasons, except
A) it is difficult to know whether a population is at carrying capacity. B) competition is impossible to measure in a natural setting. C) scientists cannot control the environment. D) scientists lack full knowledge of the life history requirements of natural populations.
A virulence factor is one which
A) allows a microbe to invade and establish itself on the host. B) allows a host to evade infection. C) normal flora use against invading microorganisms. D) invading organisms use against normal flora.
If a doctor attempts to trigger the patellar tendon reflex and a lack of response occurs, what are potential regions where pathology might exist? I) the brain II) the knee III) the spinal cord
A) only I B) only II C) only III D) only II and III