Which plants are widely planted in cities because of their resistance to insect predators, air pollution, and disease?
a. horsetails
b. ginkgoes
c. pines
d. spruces
e. junipers
ANSWER: b
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Addition of mitosis-promoting factor (MPF) to germinal cells in the skin arrested in G2 leads the cells to ____
a. stop dividing b. enter prophase c. undergo cytokinesis without mitosis d. die e. remain arrested in G2
The primary purpose of splitting the water in the light-dependent reactions of photosynthesis is to ____
a. release oxygen for aerobic respiration b. generate ATP c. generate NADH d. actively transfer hydrogen ions across the thylakoid membrane e. release electrons for electron transport phosphorylation
Which nucleotide contains the sugar ribose?
a. DNA b. ATP c. RNA d. cAMP e. UBP
Which type of bond is responsible for holding two water molecules together, creating the properties of water?
A. hydrogen B. polar C. double covalent D. ionic E. covalent