A sexually active 27-year old man complains of a greenish-yellow discharge from his urethra and difficulty urinating. A Gram-negative diplococcus was seen on the gram stain. Confirmation by culture requires plating on which of the following media?
A. EMB Agar
B. Lowenstein-Jensen agar
C. MacConkey agar
D. Mannitol salts agar
E. Choclate agar
Ans: E. Choclate agar
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Large amounts of epithelial cells, many of which are covered by tiny gram-variable rods and coccobacilli, and the absence of inflammatory cells in vaginal discharge are signs of:
a. pelvic inflammatory disease (PID). b. bartholinitis. c. cervicitis. d. bacterial vaginosis.
Coal is
a. a nonrenewable resource b. a fossil fuel c. rich in stored carbon energy d. organic remains of ancient seedless plants e. all of the above are true
In contrast to the excretory system of annelids, the excretory system of insects:a
has many openings on the body wall. b. contains flame cells. c. is not connected to the gut. d. excretes uric acid from the rectum. e. relies on diffusion across the body wall.
Most carbon dioxide is transported in the blood in the form of bicarbonate
____________________ Indicate whether the statement is true or false.