Successful long-term maintenance of weight loss is defined as intentionally losing at least ________ percent of your body weight and keeping it off for at least a year.
A. 10
B. 20
C. 12
D. 15
Answer: A
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A child who suffers from a persistent viral infection is found to have a deficiency in lymphocyte production and very few T and B cells
Other bone marrow-derived cells are produced in normal numbers, and MHC molecule expression on cells appears normal. Transfusion of mature T cells from an unrelated donor who had recovered from a previous infection by the same virus would not be expected to help the child clear his infection. Which one of the following is a reasonable explanation for why this therapeutic approach would fail? A. Viral infections are cleared by antibodies, not T cells. B. The patient's own immune system would destroy the transfused T cells before they could respond to the viral infection. C. T cells recognize peptides, not viral particles. D. Donor T cell viral antigen recognition is restricted by MHC molecules not expressed in the patient. E. In responding to the previous infection, the donor would have used up all his T cells specific for that virus.
Which of the following surgical procedures is the removal of dead or damaged tissue from a wound?
A) debridement B) electrocautery C) cauterization D) cryosurgery
Sphere-shaped cells containing nuclei are called:
A) erythrocytes. B) leukocytes. C) antigens. D) thrombocytes.
Asking questions is one way to show good listening skills.
Answer the following statement true (T) or false (F)