*Question*
Q: In a food chain, only about 10 percent of what passes to the next level? Choices: - mineral - vitamins - hydrogen - energy A:
**Answer**
energy

*Question*
Q: What are single-celled or colonial organisms that do not have membranebound nuclei? Choices: - arthropods - viruses - eukaryotes - prokaryotes A:
**Answer**
prokaryotes

*Question*
Q: What happens during the process of digestion? Choices: - excretion of food - cell division - regurgitation - breakdown of food A:
**Answer**
breakdown of food

*Question*
Q: What are modified leaves that bear sporangia? Choices: - spines - neutrophils - sporozoans - sporophylls A:
**Answer**
sporophylls