A scientific explanation that is tentative and testable is termed a/an:
A) observation. B) theory. C) fact. D) control. E) hypothesis.
Answer: E
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While walking along the beach at Point Lobos, California, the fellow pictured walks up to you with algae in hand. Figuring you to be a college student who has probably had a good introductory biology course, he asks if you know what it is.
(a) What is the cell wall component of the organism that has commercial value? (b) Name three uses for that cell wall component.
Cytoplasmic inheritance refers to genes found in ____
a. sex chromosomes b. mitochondria and chloroplasts c. viruses d. bacteria e. linkages
What is the name of the pigment that captures photons during photosynthesis?
A) photonogene B) titanium dioxide C) chlorophyll D) melanin
Which of the following is an exocrine gland?
A. salivary glands B. parathyroid C. adrenal gland D. thymus E. testes