You have been following the recent presidential elections and have heard some candidates disparaging excessive and "unnecessary" federal government expenditures
One particular candidate asks: "Why are we spending millions of dollars studying fruit flies? How can that possibly help us find a cure for cancer?" Use your knowledge of model organisms to explain why studies in D. melanogaster (the fruit fly) areactually an excellent use of research funding.
Fundingresearch on D. melanogaster is a worthwhile investment for several reasons: (1) working with insect animal models is relatively inexpensive; (2) fruit flies have historically proven useful in helping understand eukaryotic chromosome behavior; and (3) many of the genes in Drosophila are highly similar in sequence to the homologous human genes, and thus can be used to study human diseases.
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Microbes within glaciers are ________.
A. barophilic B. dormant C. non-existent D. active
In the small intestine, food molecules pass from the lumen of the intestine into the individual cells lining the intestine and then into the circulatory or lymph system of the body. If the digested molecules can leak into the abdominal cavity then ____ must have been damaged.
A. desmosomes B. focal adhesions C. hemidesmosomes D. gap junctions E. tight junctions
Organisms usually have only a single transport system for any nutrient.
Answer the following statement true (T) or false (F)
Which of the following tissues transports water and nutrients within the plant?
A. meristematic tissue B. epidermal tissue C. ground tissue D. vascular tissue