Which statement best defines pregnancy?
a. a fertilized egg that has begun cell division
b. the joining of an egg and a sperm
c. the period of about 40 weeks when a developing embryo or fetus is in the uterus
d. the process by which the uterus contracts to push the fetus out of the woman's body through the vagina

Which of the following must be cooked to 145º f? a. chicken and stuffing b. ground beef and eggs not served immediately c. beef roasts and seafood d. all of these must be cooked to 145° f.

Health and cardio respiratory fitness occurs when the heart is working, at minimum, 50 percent of heart rate reserve. true or false

A74-year-old woman, who has been followed for the past 25 years for chronic obstructive pulmonary disease comes to the ed complaining of 48 hours of temperature to 38.6 c and worsening shortness of breath. she has a chronic productive cough, which has become more copious. on physical examination, she has rhonchi and increased fremitus in the posterior mid-lung field. a gram's stain reveals many epithelial cells and multiple gram-positive and gram-negative organisms; no neutrophils are seen. which of the following is the most likely organism causing the symptoms? - escherichia coli- haemophilus influenzae- klebsiella pneumoniae- mycobacterium tuberculosis- mycoplasma pneumoniae