A polymer coat consisting of a dense, well-defined polymer layer surrounding a cell is called a
A) capsule.
B) glycocalyx.
C) lipopolysaccharide.
D) slime mold.
Answer: A
You might also like to view...
Leukocyte movement from blood to the site of tissue damage or infection involves ________, leukocyte movement toward the blood vessel wall; ________, the movement of leukocytes between endothelial cells of the blood vessel; and ________, the movement within the tissue to the site of injury.
A) margination : diapedesis : chemotaxis B) diapedesis : margination : chemotaxis C) chemotaxis : diapedesis : margination D) margination : chemotaxis : diapedesis E) chemotaxis : margination : diapedesis
What is the function of cAMP in regulation of the lac operon?
A. It causes attenuation. B. It activates an activator protein. C. It inactivates a repressor protein. D. It activates a repressor protein. E. It inactivates an activator protein.
Which of the following organisms feeds on red blood cells?
A) Giardia lamblia B) Escherichia coli C) Taenia spp. D) Vibrio parahaemolyticus E) Entamoeba histolytica
Biologically speaking, a pigment is a:
A) molecule that absorbs a photon. B) molecule that releases oxygen. C) molecule that absorbs carbon dioxide. D) cell that absorbs a photon. E) cell that fixes carbon.