Rod-shaped bacteria are called
A) cocci.
B) bacilli.
C) spirochetes.
Answer: B) bacilli
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Agar replaced gelatin as the gelling (solidifying) agent for media because
A. agar is much cheaper. B. much fewer bacteria can break down agar than gelatin. C. agar is solid at body temperature. D. gelatin became unavailable during World War II. E. much fewer bacteria can break down agar than gelatin AND agar is solid at body temperature.
Cuvier, an anatomist and paleontologist, proposed that ____
a. all present-day organisms have descended, with adaptations, from one--or possibly a few--original organisms b. Earth's history has been marked by several periods when destruction of populations was widespread and that, after each such period, the earth was repopulated c. evolutionary changes in organisms are caused by use and disuse d. although evolution is responsible for all the changes that happen to species, one center of creation resulted in the original members of each species e. geologic processes in Earth have not changed over billions of years
Isometric contractions result in generation of force, increase of muscle tension, and movement of a body part.
a. true b. false
In 1809, ______________, a French taxonomists, suggested that organisms that use one part of their body repeatedly would increase their abilities
A. Alfred Russel Wallace B. Jean Lamarck C. Georges Buffon D. Charles Darwin E. Charles Lyell