Cell walls containing ________ provide the best protection from drying
A) polysaccharides
B) triglycerides
C) waxes
D) peptidoglycan
E) sterols
C
Bloom's Taxonomy: Application
Section: Organic Macromolecules
Learning Outcome: 2.21
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Proto-oncogenes can change into oncogenes that cause cancer. Which of the following best explains the presence of these potential time bombs in eukaryotic cells?
A) Proto-oncogenes first arose from viral infections. B) Proto-oncogenes normally help regulate cell division. C) Proto-oncogenes are genetic "junk." D) Proto-oncogenes are mutant versions of normal genes. E) Cells produce proto-oncogenes as they age. Answer: B
The two continents that suggested continental drift are called:
a. North and South America. b. North America and Europe. c. South America and Africa. d. Europe and Asia. e. Australia and India.
Franklin’s work with three-dimensional models was
similar to that of a. Pauling’s. b. Watson and Crick’s. c. Wilkins’. d. Chargaff’s. e. all of these.
In performing a bacterial spore staining techniques, the counterstain is
A. Carbolfuchsin B. Methylene blue C. Malachite green D. Safranin E. The right answer is not listed