Across
1
Tissue that contracts for movement
4
Amplified beam of light
8
Infectious microscopic agent
9
Biological catalyst
10
Positive particle in nucleus
11
Precious yellow metallic element
Down
1
The Red Planet
2
Element found in all living things
3
Second lightest element
5
Glass that splits light into spectrum
6
Solid with repeating atomic pattern
7
Center of an atom or cell