O Cytosol
Centriole
Lysosome
Flagellum
Not in most
plant cells
Cytoskeleton
Ribosomes
Golgi Apparatus
Rough
Endoplasmic
Reticulum (ER)
Mitochondrion
Smooth
Endoplasmic
Reticulum (ER)
©
Nucleus
a
Plasma
Membrane
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Which of the following statements about c4 carbon fixation is not true? a c4 carbon fixation is an adaptation for plants exposed to high light intensityb. c4 carbon fixation occurs in more plants than c3 carbon fixation. c c4 carbon fixation is more common in areas of high temperatures than c3 carbon fixation. d. c4 carbon fixation occurs in the inner cells of a leaf rather than the entire leaf.

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population. b) the separated population is small, and genetic drift occurs. c) the isolated population is exposed to different selection pressures than the ancestral population. d) different mutations begin to distinguish the gene pools of the separated populations. e) gene flow between the two populations is extensive.

What is the function of the nucleus in the euglena cells you observed?