A list of some aspects of cells theory is below. 1. All living cells must have a cell wall. 2. All living cells require oxygen for survival 3. The basic unit of life is a cell.

Which of the aspects above are included in cell theory?
A)
1 only
B)
1 and 3
C)
2 and 3
D)
3 only

Which of the following is a question of morality? a.) delierately reporting false data b.) accidentally reporting false data c.) kepping a sloppy record of experimental observation d.) condition a drug experiment which will harm a lab rats

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

Which type of respiration takes place when there is no oxygen present? a. anaerobic b. mitochondrial c. cellular d. aerobica. anaerobic