Does temperature affect the rate of diffusion?
a. yes
b. no
a
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Multiple independent experiments have demonstrated that phytochrome helps trigger seasonal change responses in the plant such as changing color and loosening of leaves. Plants have the ability adapt to seasonal changes in their surroundings. This statement is an example of:
A. a hypothesis B. deductive reasoning C. a theory D. an experiment E. inductive reasoning
Histamine, serotonin, and bradykinin are all
A. mediators that increase chemotaxis. B. mediators of T-cell activity. C. fever inducers. D. mediators of B-cell activity. E. vasoactive mediators.
Which statement about a complete digestive system is FALSE?
a. It is characteristic of flatworms. b. It is a tube with two openings. c. Its regions are specialized to perform specific functions. d. Food can be ingested while previously eaten food is being digested. e. Food enters the mouth and is eliminated through the anus.
Which of the following bacterial genera includes species that protect areas of the body such as the intestinal tract and the vagina from invasion by pathogens?
A) Staphylococcus B) Listeria C) Lactobacillus D) Mycobacterium E) Corynebacterium