What are the results of the release of cAMP from Dictyostelium discoideum?
A. The larger cells cannibalize the smaller, less developed cells.
B. Cells aggregate, forming a large motile multicellular slug, precursor to the development of a fruiting body.
C. The cells form cysts until the growing conditions improve.
D. The cells develop flagella.
Answer: B
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Molecular techniques using 16S rRNA gene targeted primers are now used routinely to detect coliforms in water.
Answer the following statement true (T) or false (F)
When solutes are unloaded from phloem, water ____
a. is pumped into the phloem by active transport b. leaves the xylem by osmosis c. moves into the phloem by facilitated diffusion d. is pumped out of the phloem by active transport e. leaves the phloem by osmosis
Where in the human body can you find T cells?
A. Bone marrow D. Spleen B. Blood E. All of these C. Thymus glands
Which is the gametophyte form of most liverworts?
a. a seta b. gemmae c. a thallus
d. a frond e. a prothallus