In the decolorizing step of the Gram stain, which reagent is used?
a. Alcohol-acetone
b. Malachite green
c. Iodine
d. Crystal violet
Answer: a. Alcohol-acetone
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All of the following statements are true about organisms that photosynthesize EXCEPT:
a. They are called producers. b. They are able to convert the sun’s energy into a different form of energy. c. They release oxygen. d. They are all eukaryotes
Moths that can evade a bat's echolocation have ________ that increase their likelihood of survival and reproduction.
A. mutations B. adaptations C. fitness D. selection E. genes
Which of the following is an autoimmune disease?
A) type 1 diabetes B) anaphylactic shock C) AIDS D) allergies
Which cells play the greatest role in allergic symptoms?
a. T cells b. monocytes c. plasma cells d. mast cells e. eosinophils