What are the filter feeding structures used by Christmas tree worms, pictured here?
1.cirri
2.setae
3.radulae
4.radioles
4
You might also like to view...
During what process are cytokines released to initiate inflammation?
A) when additional leukocytes are recruited to the region B) when capillaries dilate and become more permeable C) when macrophages engulf debris and foreign matter D) when foreign matter is contained E) the clearance of the infection by phagocytosis
In eukaryotic cells, transcription cannot begin until
A. several transcription factors have bound to the promoter. B. the 5' caps are removed from the mRNA. C. DNA nucleases have isolated the transcription unit. D. the two DNA strands have completely separated and exposed the promoter. E. the DNA introns are removed from the template.
An individual who eats only plant food is referred to as a
a. planetarium. b. vegan. c. lactovegetarian. d. lactoovovegetarian.
The cell walls of eukaryotes are usually composed of
A. peptidoglycan B. polysaccharides C. teichoic acid D. mycolic acid E. minerals