*Question*
Q: What happens when development of nervous system is disturbed? Choices: - vascular disorders - muscular disorders - neurochemical disorders - neurodevelopmental disorders A:
**Answer**
neurodevelopmental disorders

*Question*
Q: Which theory describes the benzene molecule and other planar aromatic hydrocarbon molecules as hexagonal rings of sp2-hybridized carbon atoms with the unhybridized p orbital of each carbon atom perpendicular to the plane of the ring? Choices: - hybrid orbital theory - covalent bond theory - molecular orbital theory - valence bond theory A:
**Answer**
valence bond theory

*Question*
Q: In general, objects expand in all directions as temperature does what? Choices: - stays the same - cycles - decreases - increases A:
**Answer**
increases

*Question*
Q: Fruit fly and brine shrimp hox genes have evolved independently for how long? Choices: - 60.000 million years - 100.32 million years - one billion - 400 million years A:
**Answer**
400 million years