Hydrogen bonds are non-polar.
a. true
b. false
Answer: b. false
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What popular belief of the time did Lyell's theory of uniformity challenge?
a. Fossils are not evidence of extinct species. b. The Earth is only 6,000 years old. c. The Earth does not change over time. d. Species do not change over time. e. All animals exists in perfect form.
In biology lab, you are observing and dissecting flatworms. Their bodies are very thin, even see-through, and their thin body surface allows them to exchange gases of oxygen and carbon dioxide with the underlying cells and tissues. Flatworms lack which of the following anatomical systems?
A. nervous B. movement C. respiratory D. digestive E. excretion
Pasteur chose the Latin root word for "virus" meaning
A. non-living. B. particle. C. poison. D. contagious. E. extremely small.
Flatworms that contain both male and female reproductive organs in the same individual are called ________
Fill in the blank(s) with correct word