When fat enters the duodenum, which hormone is stimulated to be released?
a. amylase
b. secretin
c. gastrin
d. cholecystokinin
Ans: d. cholecystokinin
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The tissue that does the same job in gymnosperms that is done by endosperm in angiosperms is
a. megagametophyte. b. microgametophyte. c. integument. d. pollen. e. cone.
Which of the following behaviors is not associated with a high risk of HIV transmission?
a. unprotected sex (no condom used) b. exposure to contaminated blood products c. intravenous drug use d. sharing bathroom facilities e. a baby born to an HIV infected mother
Various modifications in leaves can make plants better adapted to their habitats. Which of the following is an evolutionary modification of leaves? Select all that apply.A) Floral leavesB) Fruit-bearing leavesC) SpinesD) Reproductive leavesE) Insectivorous leaves
What will be an ideal response?
Which of the following is NOT characteristic of the rickettsias?
A. presence of a lipopolysaccharide membrane B. not motile C. absence of peptidoglycan D. parasitic in cytosol E. aerobic