Which of the following types of work involves a change in position of the cell or a cell structure?
A) bioluminescent
B) electrical
C) mechanical
D) synthetic
E) concentration
Answer: C
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Purple flower (A) is dominant over white flower (a), and tall stem (B) is dominant over short stem (b). The Punnett square
represents a cross between two dihybrids (AaBb ? AaBb). In the figure above, how many plants would have purple flowers and tall stems?
a. 1 b. 3 c. 5 d. 9 e. 16
Independent assortment occurs during
a. meiosis. b. mitosis. c. morphogenesis. d. segregation. e. cell fission.
Which hypothesis suggests that organic molecules formed near Earth's surface in pools of water?
a. clay hypothesis b. iron-clay hypothesis c. organic broth hypothesis d. prebiotic soup hypothesis e. iron-sulfur world hypothesis
Which of the following is the part of a flower that contains the female reproductive structures?
A) carpel B) stamen C) sepal D) petal