Why might tardigrades make good organisms for space flight? What will be an ideal response?
Tardigrades have traits to make them very good candidates. For one, they can go dormant for years
which could be beneficial for the flight. Second, they can tolerate extreme hot and cold which could
be experienced on the journey. Third, they are very small so they would not need a large craft.
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Individuals that are heavy smokers may eventually have trouble clearing the mucous from their lungs because the structures that move fluid along the epithelial lining of the lung become damaged over time. What are these structures called?
A. Pili B. Flagella C. Cell walls D. Cilia
A collection of similarly specialized cells and any extracellular material they secrete and maintain describes
(a) an organ. (b) a system. (c) a tissue. (d) organelles.
The Grants' finch research included morphological, geographic, genetic, and ecological data. Which of these could not be directly determined by examining the birds as they tagged them?
A) Morphological measurements could be directly made of bird size and weight in addition to measurements on beak depth. B) Geographic data could be directly recorded according to where on the island the bird was found. C) Complete genetic makeup could be directly determined though analysis of phenotypes. D) Ecological data could be gathered by direct observation of food preference.
As a dermatologist trying to help reduce the incidence of skin cancer, which environmental agents known to be associated with skin cancer would you recommend your patients avoid?
A. cadmium B. benzene C. nickel D. arsenic E. polycyclic aromatic hydrocarbons F. endocrine disruptors