Many medical studies include a control group in which patients receive a medically ineffective treatment that resembles the treatment tested. What do we call the ineffective treatment?
A) The placebo
B) The dependent variable
C) The controlled experiment
D) The hypothesis
A
Biology & Microbiology
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For mechanisms of sex determination, which of the following is incorrectly paired?
A. X-Y, cow B. X-O, grasshopper C. ZZ-ZW, bluebird D. 1n-2n, pea plant E. high temperature-low temperature, alligator
Biology & Microbiology
Which of the following is not a normal causative agent of acute diarrhea with vomiting (food poisoning)?
A. Clostridium perfringens B. Bacillus cereus C. Staphylococcus aureus D. Clostridium difficile
Biology & Microbiology
Which of the following conditions is NOT caused by a deficiency of a water-soluble vitamin?
a. beriberi b. pellagra c. rickets d. scurvy e. anemia
Biology & Microbiology
Detritivores are
a. bacteria. b. plants. c. fungi. d. animals. e. both bacteria and fungi.
Biology & Microbiology