During a stay in the hospital, an accident victim develops symptoms of bacteremia. A blood sample shows the presence of Gram-positive cocci in pairs. Lab tests determine that the bacteria are nonhemolytic and bile salt tolerant. The bacteremia is likely due to
A) Enterococcus.
B) Mycoplasma.
C) Staphylococcus.
D) Streptococcus.
E) Listeria.
A
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The protective layer outside of the plasma membrane of the plant cell is called ______
A. chitin B. proteoglycans C. pectin D. the cell wall E. cellulose
Poliomyelitis is an RNA virus that can invade the nervous system and cause paralysis within a matter of hours. Polio has been virtually eliminated world-wide by which of the following?
a. Antibiotics b. Vaccination c. Mosquito control d. Quarantine e. Improve water quality
The ultimate source of energy for humans comes from what source?
A. Animals B. Air C. Water D. Plants E. The sun
Although actinomycetes vary in many ways, they all share a common type of cell wall.
Answer the following statement true (T) or false (F)