List and briefly describe three differences between prokaryotic and eukaryotic cell division
What will be an ideal response?
(1 ) Prokaryotic cells have a single circular chromosome–one piece of DNA instead of the several separate chromosomes of eukaryotic cells. Mitosis is not necessary to separate chromosomes, because they simply attach to the plasma membrane to be separated as the cell grows. (2 ) Prokaryotic chromosomes are not in a nucleus. There is no membrane around the cells to break up during chromosome division. (3 ) Prokaryotic chromosomes are not separated by attachment to a microtubule spindle. They separate by attachment to the plasma membrane. (4 ) Prokaryotic cells do not separate by formation of a cleavage furrow. The cell wall and plasma membrane grow inward to eventually separate a single cell into two cells.
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A common method used in the diagnosis of giardiasis is detection of Giardia
A) cysts in stool. B) antigens in blood. C) antigens in stool. D) cysts or antigens in stool.
The atomic nucleus consists of
a. neutrons and electrons. b. neutrons only. c. protons and electrons. d. neutrons and protons. e. protons only.
Can a persistent cycle, such as that described for heaths and other types of vegetation in northern Scotland, be considered a climax?
A) Yes B) No
Green and purple bacteria
A) contain chlorophyll a like plants. B) give off oxygen as a product of photosynthesis. C) live in salt water. D) include species that use sulfur in photosynthesis.