An immune system cell whose job it is to signal B cells to make antibodies is a
A. pathogen.
B. lymphocyte.
C. macrophage.
D. helper T cell.
Answer: D
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What does a chancre indicate?
A) pelvic inflammatory disease (PID) B) HIV C) hepatitis A D) syphilis
According to the strategies outlined in the National Physical Activity Plan, communities should require or favor single-use developments so that commercial areas are separated from residential areas to provide for a quieter and safer neighborhood environment.
Answer the following statement true (T) or false (F)
Match the activity with the proper classification.
A. Walking the dog 2 miles every day B. Riding a bike to work three times a week 7 miles each way C. Vacuuming the house D. Grocery shopping
Orthopnea can be described as ________
A) breathing in a straight-up position B) difficult breathing C) using the bones and muscles to assist with breathing D) breathing fast