Which of the following is NOT characteristic of the glycocalyx found in bacteria?
a. a structure that can be visualized using an acidic negative stain and a basic counterstain
b. if firmly attached, contributes to bacterial virulence
c. creates a slimy, slippery coating that prevents bacteria from attaching to surfaces
d. a viscous coating surrounding the cell made of polysaccharide, polypeptide, or both
Answer: c. creates a slimy, slippery coating that prevents bacteria from attaching to surfaces
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Which of the following occurs during systolic pressure?
a. The ventricles contract. b. The atria contract. c. Both the ventricles and atria contract. d. The heart is at rest.
Unlike other gymnosperms, gnetophytes have which of the following?
a. vessel elements in their xylem b. separate male and female gametes c. seeds exposed on modified leaves d. small spores that germinate
Species of Bacillus produce bacitracin and the polymyxin drugs.
Answer the following statement true (T) or false (F)
Both echinoderms and chordates are deuterostomes. This means that
What will be an ideal response?