1. What do cells actually do?
Cell Processes
What do cells actually do?

2. 1 - Divide & Reproduce
In order for organisms to GROW cells must reproduce
The Cell Cycle – the regular sequence of growth and division that cells undergo.
There are 3 parts to the cycle
Interphase – cell grows and copies DNA
Mitosis – when the nucleus divides
Cytokinesis – cytoplasm divides

5. DURING THE CELL CYCLE AND MITOSIS A
EXACT
COPY OF THE CELL IS MADE!!!!
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6. The skin gun
Organ regeneration

7. How does DNA copy itself
Step 1 –
The two sides of the DNA molecule unwind and separate – like a zipper
Step 2
Nitrogen bases that are floating around will pair up with the exposed part of the zipper
Nitrogen bases are
Adenine (A) and Thymine (T)
Guanine (G) and Cytosine (C)

9. 2 – Cellular Respiration Produce energy from glucose
During respiration cells break down simple food molecules such as sugar and release the energy they contain.

10. 2 Stages of Respiration Stage 1 Stage 2
Glucose is broken down in the cytoplasm into smaller molecules
a small amount of energy is released during this process
Stage 2
Inside the mitochondria the smaller molecules combine with oxygen to produce water and carbon dioxide (waste products)
This releases a LARGE amount of energy.

11. The Respiration EQUATION

12. How do plant cells obtain their nutrients?
Photosynthesis!
The process by which cells capture sunlight and use it to make food.
Nearly all living things get their energy from the sun (directly or indirectly)
Autotrophs – organisms that can make their own food
Heterotrophs – organisms that need to obtain nutrients (eat)

13. There are two Stages of Photosynthesis
Capturing the Sun’s Energy
Chlorophyll , which is located in the chloroplasts, captures light energy from the sun.
Using the Energy to make food
The cell uses the captured energy to produce sugars.
The cell needs two raw materials for this stage water and carbon dioxide.
Water enters the plants through the roots
Carbon Dioxide enters the plant through tiny openings on the
underside of the leaf called stomata.

14. The Photosynthesis EQUATION

15. Do you see anything similar here?