A secondary cell wall would be located:a
inside the cytoplasm.
b. embedded within the primary wall.
c. embedded within the plasma membrane.
d. inside the plasma membrane.
e. inside the primary cell wall.
E
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According to the endosymbiont hypothesis,
eukaryotic cells evolved after and as a consequence of a. the cyclic pathway of photosynthesis. b. anaerobic respiration. c. cell division. d. mutual dependency. e. chemosynthesis
In the noncyclic pathway,
a. there is a one-way flow of electrons from photosystem I to photosystem II. b. ATP alone is produced. c. hydrogen ions are pumped into the thylakoid compartment. d. NADP+ accepts only H+. e. H+ accumulates in the stroma.
Which of the following is true of prokaryotes?
A. Prokaryotes have a nucleus. B. Prokaryotes are single-celled. C. Prokaryotes do not have a chromosome. D. Prokaryotes have membrane-bounded organelles. E. Prokaryotes do not have ribosomes.
Wings of birds and butterflies have similar functions, but different evolutionary origins. They are:
A. physiological structures. B. homologous structures. C. phylogenetic structures. D. analogous structures.