*Question*
Q: Iridescent green beetles, known as jewel beetles, change color because of the light-reflecting properties of the cells that make up this? Choices: - their hairs - their wings - their scales - their external skeleton A:
**Answer**
their external skeleton

*Question*
Q: Materials such as metals have low resistance to electric current, what are they called? Choices: - electric channel - electric channels - electric conduit - electric conductors A:
**Answer**
electric conductors

*Question*
Q: Hagfishes have a skull made of what? Choices: - gelatin - chitin - bone - cartilage A:
**Answer**
cartilage

*Question*
Q: Cells that are divided by oncogenes contain damaged what? Choices: - bacteria - cells - atoms - dna A:
**Answer**
dna