Why only Eukaryotic cells have evolved into multicellular organisms.

Bacteria never form any sort of grouping that resembles a multicelled organism with an internal division of labor among its cells. Think about the attributes of prokaryotic bacterial cells and the eukaryotic cells of which all multicellular organisms are comprised. Develop some hypotheses explaining why only eukaryotic cells have evolved into multicellular organisms.

Opinions vary regarding the biological nature of viruses and protists. How do viruses and protists fit into the scheme of living things?

1. Argue for or against the statement, "Viruses are alive." 2. The internal structure of many protists is much more complex than that of cells of multicellular organisms. Does this mean that the protist is engaged in more complex activities than the multicellular organism? If not, why should the protistan cell be much more complicated?

General Biology Questions

What term refers to a cell that has no nucleus or membrane bound organelles, such as bacteria? a. prokaryotic b. eukaryotic c. planktonic d. pathogenic What term refers to a cell that has a nucleus and membrane bound organelles, such as plant and animal cells? a. prokaryotic b. eukaryotic c. planktonic d. pathogenic What is the cell wall of bacteria composed of? a. peptidoglycan b. protein c. fats d. carbohydrates What is the tangle of DNA in a bacterial cell called? a. helix b. nucleoid c. plasmid d. ribosome Do bacteria have sex? a. yes b. no Mollicutes are unique members of the bacteria world because they do not have? a. class b. cell walls c. DNA d. r... click for more

General Biology Questions

Matching: a.Lactobacillus . b.E. Coli c.Azospirillum d.C. botulinum e.C. tetani f.Borrelia burgoboferi g.Slime molds h.Dinoflagellates i.Ciliated protozoans j.Sporozoans k.Amoeboid protozoans l.Flagellates 1. bacteria causes tetanus 2. bacteria causes lime disease. 3. bacteria used in manufacture of pickles, buttermilk, and yogurt. 4. bacteria essential to growth of corn and sugar cane. 5. bacteria causes severe food poisoning. 6. bacteria produces vitamin K in the digestive system and helps newborns digest milk. 7. protist produces free-living, ameba-like cells. 8. protist parasitic and causes malaria. 9. protist includes paramecium. 10. protis... click for more

General Biology Questions

1. Term that describes the pink-colored E. coli. on this Gram-stained slide. a. Gram-negative b. Gram-positive 2. The round shaped bacterium is called _____. a. coccus b. spirillum c. bacillus 3. The oblong shaped bacterium is called ____. a. coccus b. spirillum c. bacillus 4. The wavy shaped bacterium is called _____. a. coccus b. spirillum c. bacillus 5. The diagram is outlining which process? a. prokaryotic fission b. bacterial conjugation c. lysis d. endospore formation 6. The diagram is outlining which process? a. prokaryotic fission b. bacterial conjugation c. lysis d. endospore formation 7. Which of the following viruses infects bacteria? a. adeno... click for more