The process that causes embryonic cells to produce signals that alter the behavior of neighboring cells is known as
A. contact inhibition.
B. ooplasmic localization.
C. embryonic induction.
D. pattern formation.
E. gene splicing.
Answer: C
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The microtubules of the mitotic spindle originate from the ____ in both plant and animal cells
a. microtubule organizing centers (MTOCs) b. centromere c. chromatid d. centriole e. centrosome
Which of the following are adaptations to land of both gymnosperms and angiosperms but are lacking in ferns and mosses?
a. pollen and seeds b. fruits and flowers c. vascular system d. true roots, stems, and leaves e. spores
Discuss the significance of the term "deeply branching bacteria".
What will be an ideal response?
Choose the option that best describes the relationship between the cell wall thickness of parenchyma cells versus sclerenchyma cells
A) The cell walls of parenchyma cells are thinner than those of sclerenchyma cells. B) The cell walls of parenchyma cells are thicker than those of sclerenchyma cells. C) The thickness of the cell walls for both types of cells is roughly equal. D) The thickness of the cell walls for both types of cells is too variable for a comparison to be made.