The control group in Paine’s study is __________
a. the tidal pools from which starfish were removed
b. the tidal pools from which starfish were not removed
c. all tidal pools included in the study
A
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Which of the following is true of hydrogen peroxide?
A. It is a sterilant for inanimate objects and is quickly inactivated on living tissue. B. It leaves a toxic residue. C. It is broken down by catalase into water and oxygen. D. It is even more effective when used in combination with peracetic acid. E. It is a sterilant for inanimate objects and is quickly inactivated on living tissue; it is broken down by catalase into water and oxygen; AND it is even more effective when used in combination with peracetic acid.
In the accompanying figure, the structure labeled “B” is a ____
a. muscle fiber b. sarcoplasmic reticulum c. mitochondria
d. myofibril e. Z line
The gametophyte of a fern is
a. haploid. b. photoautotrophic. c. a structure that produces eggs and/or sperm. d. all of the above.
Differentiate between the following terms: primates, anthropoids, hominoids, and hominids. What will be an ideal response?