1. Cell Organelles Review

2. Genes
Segments of chromosomes that are the genetic code of the cell. There are about 25,000 in each human cell.

3. Genes
Where are the genes found?
ON THE CHROMOSOMES INSIDE THE NUCLEUS

4. Nucleus
Control-center of the cell that controls all the cell’s activities, including growth and reproduction.

5. Nucleus The nucleus is like the brains of the cell that does what?
CONTROLS EATING, MOVEMENT, AND REPRODUCTION
The nucleus is often called the control center of the cell- why do you think that is?
BECAUSE IT CONTROLS THINGS
Why is the Nucleus usually not found near the cell membrane?
FOR PROTECTION
What important thing does the nucleus hold?
GENETIC INFORMATION: CHROMOSOMES AND GENES

6. CHROMOSOMES
Thread-like fibers in the nucleus that hold the DNA (genetic code) of the cell.

7. CHROMOSOMES Inside what part of the cell are chromosomes found?
NUCLEUS
How many pairs of chromosomes are found inside our cells? 23
What do chromosomes do for a cell?
HOLD THE GENETIC INFORMATION, DNA

8. DNA
DNA is the genetic material that carries information about an organism and is passed from parent to offspring

9. DNA
Where is DNA found?
Most the DNA found in a cell is found in the cell’s nucleus
What shape does the DNA molecule take?
The shape of the DNA molecule is described as a double helix.
What does this shape look like?
The double helix sort of looks like a twisted ladder.

10. Cell
Nucleus
Chromosomes
DNA
Genes