Which of the following statements about plant cell walls is NOT true?
A. The cell wall has three layers: the middle
lamella, the primary cell wall, and the
secondary cell wall.
B. In the late stages of cell division the middle
lamella is the first cell wall layer to be formed,
serving to attach the daughter cells to each
other.
C. The primary cell wall is thin and flexible,
formed while the cells are still growing.
D. The secondary cell wall contains complex
components such as lignin that are rigid.
E. Like the extracellular matrix formed by
animal cells, the cell wall polymers are
formed in the cytoplasm and secreted to the
outside of the cell.
E
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The human population is currently growing exponentially. Assuming that there is a carrying capacity for humans (Khuman), how would you suggest that the population slow its growth and stabilize at a sustainable number? (Select and defend one or more of the choices listed below.)
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A. IgE B. IgG C. IgM D. IgD
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