All of the following are functions of the lymphatic system EXCEPT
A. production, maintenance, and distribution of lymphocytes.
B. defending the body against pathogens.
C. transporting gases, nutrients, and metabolic wastes to parts of the body which have exchange boundaries with the external environment.
D. absorbing excess tissue fluids and returning them to the bloodstream.
Answer: C
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Answer the following statements true (T) or false (F)
1. Lactoferrin and transferrin are proteins that bind iron, and therefore deprive pathogens of this essential nutrient. 2. Pyrogenic substances cause the production of pus. 3. Interferons are virus-specific, but are not species-specific. 4. Complement is the name of a single plasma protein that “complements” the actions of the immune system. 5. Eosinophils are much better phagocytes than neutrophils.
A eukaryotic chromosome consists of _____
a. DNA and lipids b. RNA and proteins c. DNA and proteins d. DNA and carbohydrates e. just DNA
The animal in the above figure is using ____
for protection. a. mimicry b. display behavior c. warning coloration Community Ecology 416 d. chemical defenses e. camouflage
Following long periods of infection with HIV, an X4 strain often evolves. What evolutionary advantage does the X4 strain confer on the viral population, and what specific protein does this strain interact with?
What will be an ideal response?