Activity #42 A Closer Look
Levels of Organization:
1. Observe the pictures of cell in Figure 2, “Animal Cells.” Cells 1,2, and 4 were taken with a scanning
electron microscope, which shows the surface of the cell. This type of microscope magnifies the cell
much more than the microscope you use in class. You can see that the cells have quite different
shapes: some are rounded, while others are elongates, flat, or rugged. These shapes depend on the
cell functions in the body. Try to match each cell with one of the following descriptions. (Answer this
question in the table below)
2. Based on its description, which of the four cells described in Questions 1 is a nerve cell? Which is
a red blood cell? Which is a white blood cell? Which is a skin cell? Explain how you were able to
match the type of cell with its function. (Answer this question in the table below)
Description Pictures that Type of What does the structure tell
with Cell you about its function?
a. These cells have long branching parts
that send signal s to distant parts of the
b. These cells form an even covering on
the surface of areas like the inside of the
c. These round human cells are unusual
because they do not have a nucleus.
They are full of a protein that carries
oxygen to all parts of the body.
d. These cells are able to crawl around
the body to attack bacteria and other
foreign material. Ruffles on the cell
membrane lead the way as the cells
4. Explain why membranes are so important to cells.
Act # 42 pg 1 of 5
Bacterial Cell: This is an illustration of a bacterial cell, or bacteria. Bacteria are all prokaryotic creatures, meaning they
have no nucleus to enclose their DNA. If you were to look at actual bacteria under a microscope, it would not look exactly like
this. But, you can use this diagram to learn the structures of a generic bacterial cell, the locations of these structures, their
functions, and how these structures compare to other types of cells. Label and color the structures below.
Structure Function (see Shark Book pg 326)
Cytoplasm pg 90
Amoeba: This is an illustration of an amoeba, a kind or Protist. Protists include many kinds of microbes. They are all
eukaryotic creatures, meaning their DNA is enclosed in nucleus inside the cell, just like animal cells. In fact, Protists are
sometimes describes as animal-like and plant-like. However, unlike plants and animals, protists are unicellular. Also, because
they are made of only one cell, protists are not or very little differentiated, meaning they do not have different kinds of cells that
do different jobs. If you were to look at an actual amoeba under a microscope, it would not look exactly like this. But, you can
use this diagram to learn the structures, the locations of these structures, their functions, and how the structures found in an
amoeba compare to other types of cells. Label and color the structures below.
Structure Function (see Shark Book page 336)
False foot/ pseudopod
Cytoplasm pg 90
Act # 42 pg 2 of 5
Animal Cell: This is an illustration of an animal cell. If you were to look at an actual animal cell, it would not look exactly
like this. In fact, there are many different kinds of specialized cells within one animal. For example, in humans, we have blood
cells, nerve cells, cheek cells, etc. which all look different but share essential animal cell qualities. You can use this diagram to
learn the structure of a generic animal cell, the location of these structures, their function and how these structures compare to
other types of cells. Label and color the structures below.
Structure Function (see Shark Book page 91)
(smooth and rough) pg 90
Act # 42 pg 3 of 5
Plant Cell: This is an illustration of a plant cell. If you were to look at an actual plant cell, it would not look exactly like this.
However, we can use this diagram to help us learn the structures of a plant cell, their locations, functions, and how these
structures compare to other types of cells.
Label and color the structures below.
Structure Function (see Shark Book page 90)
Ribosome pg 91
Golgi body pg 91
Mitochondria pg 91
(smooth and rough)
Act # 42 pg 4 of 5
“Cell City” Modeling Cell Structures:
1. State the function performed by each numbered structure in the figure.
2. Now name a cell structure that performs each of these same functions.
1. Construction site = ___________________
2. Transport Company = ___________________
3. Power Plant = ___________________
4. Food processing plant =___________________
5. Waste Disposal Plant =___________________
6. City Hall = ___________________
7. Storage Tanks =___________________
8. City gate = ___________________
3. Does cell city represent a plant cell or an animal cell? Explain your answer.
In the beginning of Activity # ___ I thought the answer to the challenge question was…..
but now I think (or still think) ……
My evidence for this is ……
Choose one or more summary sentence starters to complete.
Act # 42 pg 5 of 5