The walls of bacteria contain peptidoglycan, which is:
a. lipids crosslinked with sugars.
b. sugars crosslinked with proteins.
c. a protein.
d. a lipid.
e. a polysaccharide.
B
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Which of the following bacterial species is part of animal flora and transmitted to humans during close animal contact, including bites?
a. S. paucimobilis b. Eikenella corrodens c. P. multocida d. W. virosa
Rhizomes, tubers, corms, and stolons are examples of modified
a. leaves. b. bulbs. c. roots. d. flowers. e. stems.
Muscle that is not striated and is involuntary is ____
a. cardiac only b. skeletal only c. smooth only d. both cardiac and skeletal e. both cardiac and smooth
During an immune response, which cells disintegrate producing a chemical net that traps nearby invaders?
a. T cells b. B cells c. macrophages d. neutrophils e. eosinophils