1. Cells and Life Processes
Table of Contents
Levels of Organization
Discovering Cells
Cells and Homeostasis
Looking Inside Cells
Cell Division

2. Levels of Organization
Elements
The colored spheres represent atoms. Which examples represent the same element?

3. Levels of Organization
Molecules and Compounds
Carbon dioxide is a compound. So is water.

4. Levels of Organization
The graph compares the percentages of some molecules found in a bacterial cell and in an animal cell. What would be a title for the graph?

5. Levels of Organization
Living things are organized in levels of increasing complexity. Complete the missing terms to show the patterns of organization of organisms from simple to complex.

6. Discovering Cells Needs of Cells
A single cell has the same needs as an entire organism. What material moves in the direction shown by each blank arrow?

7. Discovering Cells A Compound Microscope This microscope has a
Eyepiece
lens
Revolving
nosepiece
Lenses
Slide
Stage
Lens
Light rays
Light source
A Compound Microscope
This microscope has a
10x lens in the eyepiece. The revolving nosepiece holds three different lenses: 4x, 10x, and 40x.

8. Discovering Cells Resolution
The images in colorful photographs actually consist of only a few ink colors in the form of dots. This circle has been enlarged to show a tiny section of a picture of a bird's wing.

9. Cells and Homeostasis Energy From Food
Florida’s orange crop comes from the energy captured
in photosynthesis. The 2008–2009 crop totaled 162 million boxes. Which process applies to each organism?

10. Cells and Homeostasis Diffusion
Some materials move across the cell membrane by way of diffusion. Show the overall direction that molecules will travel as a result of diffusion.

11. Looking Inside Cells A Typical Animal Cell
Each kind of cell structure has a different function within a cell. Where
is the cell membrane?

12. Looking Inside Cells Organelles of a Cell
Ribosomes
Chromatin
Nucleolus
Nuclear
envelope
Pores
What does the nuclear envelope do?
In what types of cells would
you expect to find a lot of mitochondria?
What do ribosomes do?
Organelles of a Cell
The structures of a cell look as different as their functions. Where do you find these structures in the cell diagram?

13. Looking Inside Cells Plant Cell
These illustrations show typical structures found in plant cells. What is the function of each structure?

14. Looking Inside Cells Animal Cell
These illustrations show typical structures found in animal cells. What is the function of each structure?

15. Looking Inside Cells
Compare and contrast the structures present in plant cells and animal cells.

16. Looking Inside Cells Golgi Apparatus
How can this sentence be completed? The Golgi Apparatus is an organelle that ___________ and ___________ materials made in the __________.

17. Looking Inside Cells Model for a Cell Function
How do the parts of a cell function in ways that are similar to the parts of a building?

18. Looking Inside Cells Chloroplast
A chloroplast captures energy from sunlight and changes it
to a form of energy cells can use in making food. Chloroplasts make leaves green because leaf cells contain many chloroplasts.

19. Cell Division Comparing Cell Cycles
The table below compares the length of different cell cycles.

20. Cell Division Interphase: Preparing to Divide
The changes in a cell during interphase prepare the cell for mitosis.

21. Cell Division
When one cell splits in half during cell division, the result is two new cells. Each of those two cells can divide into two more, and so on.

22. Cell Division Mitosis: Prophase
Mitosis begins with prophase, which involves further changes to the cell.

23. Cell Division The Cell Cycle
Centriole pairs
Spindle fiber
Centromere
Chromatids
The Cell Cycle
Cells undergo an orderly sequence of events as they
grow and divide. What are the missing parts of the stages?

24. Cell Division Firmicutes
Certain bacteria divide only once every 100 years! Bacteria known as Firmicutes live in certain rocks that are found 3 kilometers below Earth’s surface. The life functions of Firmicutes occur so slowly that it takes 100 years or more for them to store enough energy to split in two.

25. Cell Division Length of a Liver Cell Cycle
Human liver cells generally reproduce less than once per year. At other times, they can complete one cell cycle in about 22 hours.

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