The term ________ variable refers to one of two variables involved in an experiment, in which neither variable can be isolated as having an effect
A) multiple B) confounding C) blind D) statistical
Answer: B
Biology & Microbiology
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The genus Frankia
A. produces heat resistant endospores and is strictly a marine bacterium. B. produces heat-resistant endospores. C. grows in symbiotic association with the roots of some higher plants and fixes nitrogen. D. is strictly a marine bacterium.
Biology & Microbiology
A hypothesis must be tested many times before it can be considered a theory.
Answer the following statement true (T) or false (F)
Biology & Microbiology
Annelids have _______, which are hair-like extensions anchored in their skin.
a. chaetae b. parapodia c. radula d. nephridia
Biology & Microbiology
Alex has cold sores on his mouth. He can transfer the herpes virus to:
a. another person's genitals b. another person's mouth c. his own eyes d. all of the above
Biology & Microbiology