Question

name class date
x. cell wall. the cell wall is the stiff outer layer of plant cells. it surrounds the cell membrane and its contents. cell walls are composed of a nonliving material called cellulose. the stiffness of the cell wall limits the plant’s growth and movement. the cell wall gives the plant its shape (figure 5-9).

review questions

1. describe the cell wall.

1. cellulose is a ______________ material.

o. comparison of plant and animal cells. most cell organelles are found in both plant and animal cells. however, there are some structural differences between a typical animal cell and a typical green plant cell. table 5-1 compares the structural similarities and differences between the two types of cells.

organelle | green plant | animal
plasma membrane | present | present
cytoplasm | present | present
nucleus | present | present
chromosomes | present | present
mitochondria | present | present
er | present | present
ribosomes | present | present
golgi complex | present | present
vacuoles | large | small
lysosomes | present | present
centrioles | absent | present
chloroplasts | present | absent
cell wall | present | absent

table 5-1. comparison and animal cells.

review questions

1. name two structures that are found only in plant cells.

Explanation:

Sub - question 1 (Describe the cell wall)

From the text, the cell wall is a stiff outer layer of plant cells, surrounds the cell membrane and its contents, is composed of cellulose, limits plant growth and movement, and gives the plant its shape.

The text says "Cell walls are composed of a nonliving material called cellulose", so we can fill in the blank with "non - living".

Looking at the table, for plant cells (green plant) and animal cells, chloroplasts are present in green plant cells and absent in animal cells, and cell wall is present in green plant cells and absent in animal cells, and also vacuoles in plant cells are large while in animal cells are small (but the main distinction of being only in plant cells for some structures: chloroplasts and cell wall are clearly present in plant and absent in animal, also vacuole size is a difference but the question is about structures found only in plant cells. So we can choose chloroplasts and cell wall (or large vacuoles, but chloroplasts and cell wall are more distinct).

Answer:

The cell wall is the stiff outer layer of plant cells. It surrounds the cell membrane and its contents, is composed of a non - living material called cellulose. Its stiffness limits the plant's growth and movement, and it gives the plant its shape.

Sub - question 2 (Cellulose is a ______ material)