1. KEY CONCEPT Technology continually changes the way biologists work.

2. Imaging technologies provide new views of life.
A microscope provides an enlarged image of an object.
light microscopes (LM)
Use light to produce an image
Magnify up to 1500x
Produce 2D image
Can view living or preserved specimens
stoma

3. Imaging technologies provide new views of life.
A microscope provides an enlarged image of an object.
stoma
light microscopes (LM)
Use light to produce an image
Magnify up to 1500x
Produce 2D image
Can view living or preserved specimens
scanning electron microscopes (SEM)
Use electrons to produce an image
Magnify up to 100,000x
Produce 3D image
View preserved specimens in a vacuum

4. Imaging technologies provide new views of life.
A microscope provides an enlarged image of an object.
light microscopes (LM)
Use light to produce an image
Magnify up to 1500x
Produce 2D image
Can view living or preserved specimens
stoma
scanning electron microscopes (SEM)
Use electrons to produce an image
Magnify up to 100,000x
Produce 3D image
View preserved specimens in a vacuum
transmission electron microscopes (TEM)

5. Imaging technology is used in medicine.
X-ray images
Show dense material

6. Imaging technology is used in medicine.
X-ray images
Show dense tissue
magnetic resonance imaging (MRI)
Show all tissues in the area

7. Imaging technology is used in medicine.
X-ray images
Show dense tissue
magnetic resonance imaging (MRI)
Show all tissues in the area
functional MRI (fMRI)
Show the areas of the brain that function during an activity

8. Complex systems are modeled on computers.
Computer models are used to study systems that cannot be studied directly.
heart attacks
Normal heartbeat
effect of medicines on the human body
movement of water molecules into and out of a cell
spread of a disease through a population
Heart attack
Computer models are used when experiments are not safe, ethical, or practical.

9. The tools of molecular genetics give rise to new biological studies.
A gene is a segment of DNA that stores genetic information.
In just over 40 years we have gone from knowing how the genetic code works, to changing genes, to implanting genes from 1 species to another

10. Through our understanding of DNA, we can study genetics on a molecular level.
molecular genetics
Study and manipulation of DNA on a molecular level
genomics
Study and comparison of genomes within and across species