Q: In what system can energy change forms but the total amount of energy stay constant? Choices: - open - primary - heterogeneous - closed A:
closed

Q: What is the key issue in the small-population approach? Choices: - disease variation - genetic mutation - alternative variation - genetic variation A:
genetic variation

Q: Q: Many pathogens spread by droplets in the air. droplets are released when a person does what? Choices: - cries or laughs - itches or scratches - vomits or cries - coughs or sneezes A:
A: coughs or sneezes

Question: Q: What kinds of neutron stars emit radiation in pulses? Choices: - quasars - red giants - dwarf stars - pulsars A:
Answer: pulsars

*Question*
Q: What is located beneath the lithosphere? Choices: - hydropshere - troposphere - magnetosphere - asthenosphere A:
**Answer**
asthenosphere

*Question*
Q: Which component of the electron transport chain does cyanide inhibit? Choices: - succinate dehydrogenase - adenosine diphosphate - mitochondrial matrix - cytochrome c oxidase A:
**Answer**
cytochrome c oxidase