List the characteristics of the following groups and identify examples for each: Archaea, Bacteria, and Eukarya. What will be an ideal response?
Answers will vary, but should include the following at a minimum. In contrast to Bacteria,
Archaea do not have peptidoglycan in their cell walls. The plasma membrane of both
Bacteria and Eukarya have straight chain fatty acids linked to glycerol molecules by ester
linkages. Archaea are more like Eukarya because they do not have simple RNA polymerase .
Like Eukarya, Archaea translation begins with methionine. Both Archaea and Bacteria lack
the membrane organelles of Eukarya.
Archaea example is Methanospirillum hungata.
Bacteria example is Escherichia coli.
Eukarya example is Plasmodium falciparum.
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During which meiotic phases does oogenesis arrest?
A. prophase I and metaphase II B. prophase I and prophase II C. metaphase I and prophase II D. metaphase I and metaphase II E. metaphase I and anaphase II
The net result of glycolysis is
a. 2 NADH, 2 ATP, and 2 pyruvates b. 8 NADH, 2 ATP, and 6 carbon dioxides c. 36 ATP d. 2 NADH, 4 ATP, and 2 pyruvates e. 2 NADH, 2 ATP, and 2 acetyl-CoAs
Paramecium aurelia has a higher rate of population growth and can tolerate a higher population density than P. caudatum. When both species were introduced into a tube containing a fixed amount of bacterial food, the populations of both species
A) thrived, even though they shared the same food supply. B) initially increased, after which P. aurelia thrived and P. caudatum died out. C) initially increased, after which P. caudatum thrived and P. aurelia died out. D) died out.
Organisms that depend on the energy stored in chemical bonds by other organisms for their food energy are called ________.
A. Chemotrophs B. Autotrophs C. Oligotrophs D. Heterotrophs