Eukaryotes differ from prokaryotes in that eukaryotes
A. Generally lack sterols in their cell membrane
B. Contain more than one chromosome
C. Lack 80?s ribosome
D. Have peptidoglycan
Ans: B. Contain more than one chromosome
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Which of the following statements regarding the G1 (first gap) phase of the eukaryotic cell cycle is NOT true?
A. Most cells spend the majority of their lives in the G1 phase of the cell cycle. B. Cells that are terminally differentiated and will not divide mitotically might exit the G1 phase and enter the G0 phase. C. If environmental conditions are favorable during the G1 phase, G1 cyclins are degraded causing the cell to prepare to replicate its DNA. D. The G1 phase is only part of interphase. E. If DNA is heavily damaged, checkpoint proteins will delay the cell cycle; the damage will either be fixed or cell division will be permanently stopped.
Replicating early Earth conditions in the lab, the Miller experiment created from inorganic chemicals
a. life. b. artificial proteins. c. DNA. d. simple molds. e. amino acids.
When you increased the predation rate (from 0.0030 to 0.0070), did the maximum size of predator population increase or decrease?
a. It increased. b. It decreased. c. It didn't change.
A biome with complex structure, warm weather, plentiful rainfall, and diverse species is a
A. tropical rain forest. B. taiga. C. tundra. D. savanna.