You are a doctor who examines a swollen and warm puncture wound on the hand of a patient. Does the patient's immune system response to this wound tell you that every aspect of his or her immune system is functioning normally?
A. Yes, because the response of swelling and
warmth at a wound site shows a complete
response by both the innate and adaptive
immune systems of animals.
B. No, because this response does not
include the response of inflammation.
C. No, because this response does not
include the adaptive immune response.
D. No, because this response does not
include the complement response or adaptive
immune response.
E. All the answer options are incorrect.
D
You might also like to view...
Many signal transduction pathways utilize second messengers to ____
a. transport a signal through the lipid bilayer of the plasma membrane b. relay a signal from the outside of the cell to the inside c. relay a signal from the inside of a cell membrane to the outside of the cell d. decrease the message once the signal molecules have left the receptor e. relay the message from the inner surface of the plasma membrane throughout the cytoplasm
This is an example of _____
1.energy, the capacity to do work
2.activation energy supplied by CO2
3.the effect of temperature and pH on a reaction
4.an electron transfer chain
All of the following are key elements of evolution EXCEPT which one?
A) Organisms have changed from their ancestors over time. B) Change has been accomplished with a purpose and a plan. C) Change is unpredictable and determined by natural processes. D) Change depends on alterations in the DNA.
Sickle-cell anemia is a disease that alters the structure of hemoglobin, and in turn, can cause severe health problems in individuals if left untreated
The disease is expressed in homozygous recessive individuals, whereas the heterozygous condition usually does not result in any symptoms of the disease. Sickle-cell anemia primarily affects Africans and Caucasians of Mediterranean descent. Typically, when a disease occurs only in the homozygous recessive condition, the incidence of the gene in the population is predicted to decline overtime, particularly when it can be detected either phenotypically or by genetic testing. In East Africa, the disease still occurs in about 40% of the population. Give an explanation for why the incidence of the disease has remained so high in African populations.