*Question*
Q: What are composed of an oxygen atom that forms single bonds with two carbon atoms? Choices: - sugars - solvents - acids - ethers A:
**Answer**
ethers

*Question*
Q: What is a trait whose allele is found on a sex chromosome called? Choices: - dimorphism - linked trait - gender trait - genomic trait - sex-linked trait A:
**Answer**
sex-linked trait

*Question*
Q: Higher pressures increase the solubility of what? Choices: - molecules - fuels - bases - gases A:
**Answer**
gases

*Question*
Q: What classification system was developed by a swedish botanist trying to classify all known living things? Choices: - taxonomical system - plantological system - bionumerical system - linnaean system A:
**Answer**
linnaean system