What color appears when an object ABSORBS all visible light?
black
Name two cell structures that are found in PLANT cells but NOT in animal cells?
Cell wall, chloroplast
What color appears when an object REFLECTS all visible light?
White
In which medium do sound waves travel fastest, and why?
Solid because particles in solid are more packed together.
What is the level of organization in living things from MOST complex to simplest?
Organ system -> Organ -> Tissue -> Cell
TRUE or FALSE. According to cell theory, living things arise spontaneously from non-living things.
FALSE
What do you call the union or joining of egg and sperm cells?
fertilization