In which organ is food called chyme?
a. the small intestine
b. the stomach
c. the large intestine
d. the liver
Answer: b. the stomach
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This organism, belonging to the family Enterobacteriaceae, grows best at 25°C to 30°C. Domestic and wild rats and other animals can carry this organism. What is the medium of choice?
a. MacConkey agar b. Xylose-lysine-deoxycholate (XLD) agar c. Cefsulodin-irgasan-novobiocin (CIN) agar d. Hektoen enteric (HE) agar
All of the following are parts of a flower except the
a. carpel. b. stamen. c. ovary. d. fruit. e. cuticle.
The study of the body structures of the ostrich, emu and rhea shown here is an example of ____
a. morphological divergence b. comparative morphology c. anatomical convergence d. biogeography e. radiometric dating
Members of the phylum ________ are characterized by having tube feet
A) Echinodermata B) Mollusca C) Annelida D) Platyhelminthes E) Arthropoda