Antigens can be all of the following except
A) proteins.
B) large polysaccharides that protrude from virus surfaces or foreign cells.
C) blood or tissue cells from organisms of the same or different species.
D) lipids such as cholesterol.
Answer: D
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The figure below shows a Paramecium, a single-celled freshwater protist. The hairlike structures visible on the Paramecium allow it to move. These structures are ________.
A) microfilaments B) intermediate filaments C) flagella D) cilia
Food allergies include gastrointestinal symptoms and often hives.
Answer the following statement true (T) or false (F)
New genes are introduced into a gene pool by
A. evolution. B. spontaneous mutations. C. natural selection. D. inheritance of acquired characteristics.
After glycolysis, pyruvate is oxidized to one CO2 and the two-carbon molecule acetyl-CoA by a multienzyme system called the ________ ________ complex.
What will be an ideal response?