Compare and contrast the different types of receptors found in the body
What will be an ideal response?
There are five major types of receptors found in the human body. Mechanoreceptors respond to tactile stimuli and are also sensitive to changes in blood pressure and body position. Chemoreceptors react to chemical stimulation, such as taste and smell. Thermoreceptors are sensitive to fluctuation in temperature, whereas photoreceptors detect changes in light intensity. Pain receptors are sensitive to physical or chemical stimuli produced by damaged tissues. These receptors are associated with both chemoreceptors and mechanoreceptors.
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How can harmful alleles persist in a population despite natural selection?
What will be an ideal response?
The earliest fossils found appear to be from the domain Bacteria. From which group of bacteria are these fossils?
a. Staphylococcus b. nitrogen-fixing bacteria c. cyanobacteria d. various lactobacilli
A zombie apocalypse wipes out almost the entire human species before the zombie threat is eliminated. Only a group of 100 people who were at a family reunion on an uninhabited island survived. They returned to the mainland completely unaware of what had happened to everyone. Answer the following question(s) regarding the few survivors who now begin to rebuild the human population.Certain traits will have been lost from the gene pool forever. This loss of diversity in a reduced population is called ________.
A. bottleneck effect B. gene flow C. founder effect D. genetic drift
Rickettsias are ________ intracellular bacteria.
Fill in the blank(s) with the appropriate word(s).