Entamoeba histolytica is transmitted by.
A) mosquitoes (bites).
B) inhaling contaminated particles.
C) sexual intercourse.
D) cysts in feces, contaminating food/water.
Ans: D) cysts in feces, contaminating food/water.
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The enzyme catalase neutralizes hydrogen peroxide produced in hair follicles.
Answer the following statement true (T) or false (F)
Which of the following descriptions best matches the function of platelets?
A) adhere to collagen beneath endothelium B) helper cells are one type C) produce antibodies in response to antigens D) kill bacteria using hydrogen peroxide E) often elevated in allergic individuals
A neuron is a type of neuroglia
Indicate whether the statement is true or false
If a lever has a fulcrum at one end, a tendon exerting force 5 cm distal to the fulcrum, and resistance at the end opposite to the fulcrum, which of the following is true?
A. It is a third-class lever. B. It is a first-class lever. C. The mechanical advantage is higher than 1.0. D. The point of effort will move farther than the point of resistance. E. This joint would use "low-gear" muscles.