Changes in the shape of a cell usually involve a reorganization of the _____
A) nucleus
B) cytoskeleton
C) extracellular matrix
D) transport proteins
B
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Answer the following statements true (T) or false (F)
1. Animal biomass exceeds plant biomass in most ecosystems. 2. The amount of CO2 in the atmosphere is stable over a period of one year. 3. Insect densities tend to decrease in elevated CO2, all other factors being equal. 4. Biomagnification results in an increased concentration of bioaccumulated chemicals as one moves from upper to lower trophic levels.
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
Fleas are endoparasites.
Answer the following statement true (T) or false (F)
The cross GE/ge × ge/ge produces the following progeny: GE/ge 404; ge/ge 396; gE/ge 97; Ge/ge 103. From these data, one can conclude that there are ________ map units between the G and E loci
A) 5 B) 10 C) 15 D) 25 E) 20