Which of the following supports the idea that land plants arose from green algae?
A) Green algae live in freshwater environments, and plants require fresh water.
B) Both utilize chlorophylls a and b.
C) Both photosynthesize.
D) Both are multicellular.
E) Both contain lignin in their cell walls.
B
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Signals from the extracellular matrix to the cytoskeleton may be transmitted by _____
A) fibronectin B) proteoglycans C) integrins D) collagen E) middle lamella
Detecting a specific protein with an antibody is considered a(n) ________ method
A) selection B) screening C) isolation D) duplication
A reproductive barrier that prevents individuals from closely related species from interbreeding is an example of ________
A) a prezygotic barrier B) allopatric speciation C) sympatric speciation D) geographic isolation of populations
DNA polymerase III
A. cannot add nucleotides to the lagging strand. B. synthesizes an RNA primer. C. synthesizes new DNA only in the 5' to 3' direction. D. is needed for adding nucleotides during mRNA synthesis. E. All of these choices are correct.