Across
1
Unit of heredity
4
Reddish electrical conductor
5
The Red Planet
7
Biological catalyst
10
Absolute temperature scale unit
11
Ball of burning gas in space
Down
2
Center of an atom or cell
3
Unit of force
5
Tissue that contracts for movement
6
Blocking of light by a celestial body
8
Unit of energy
9
Infectious microscopic agent