The general approach in which researchers and clinicians use methods that enable them to understand the molecular changes that occur in diseases such as cancer is called _________
A. molecular profiling
B. personalized medicine
C. DNA microarrays
D. cluster analysis
A
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Which one of the following statements about gills operating in water is FALSE?
A. Water can support delicate gill structures. B. Most fish actively pump water over their gills. C. Keeping membranes moist is not a problem. D. Water carries more oxygen than air and this requires gills be more efficient than lungs. E. Gills have evolved many times and take different forms in aquatic animals.
In a class field trip, you scrape what looks like an organism off of a stream rock. Through the semester, with chemical analysis and electron microscopes, you determine that the cell has DNA, RNA, ribosomes, a cell membrane, and cytoplasm. This helps you determine that
A. this is an unusual plant that you collected from the stream. B. this organism you collected is in the Eukarya domain. C. this organism you collected is in the Bacteria domain. D. this organism you collected is in the Archaea domain. E. this is an organism with cells having common features with all life.
During splicing, which molecular component of the spliceosome catalyzes the excision reaction?
A.sugar B. DNA C. protein D. lipid E. RNA
LOOK OVER PARTS OF MICROSCOPE
What will be an ideal response?