A ______ is generally a fake medicine used to disguise the treatments of participants in an experiment.
Fill in the blank(s) with the appropriate word(s).
placebo
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Which of the following kind of animal is NOT an amphibian?
A. Caudata B. anuran C. salamander D. Gymnopiona E. amniote
A bacterial chromosome consists of:
a. a linear DNA molecule many times larger than the cell. b. a circular DNA molecule many times larger than the cell. c. a circular DNA molecule smaller than the cell. d. a linear DNA molecule smaller than the cell. e. a linear or circular DNA molecule smaller than the cell.
In a prometaphase cell, the:
a. mitotic spindle is beginning to assemble. b. nucleolus disappears. c. spindle fibers pull chromosomes to opposite sides of the cell. d. duplicated chromosomes become visible with the light microscope. e. nuclear envelope is visible with the light microscope.
Which of the following is a function of the circulatory system?
A) transporting nerve impulses throughout the body B) governing nutrient concentration in the blood C) transporting nutrients to body cells D) mounting a response to invading microorganisms