Q: Nitrogen is a very important element to living things, because it is part of nucleotides and amino acids that are the building blocks of nucleic acids and these? Choices: - cells - lipids - follicles - proteins A:
proteins

Q: What type of activity in the brain causes epilepsy? Choices: - hormone imbalance - toxic overload - bleeding - abnormal electrical activity A:
abnormal electrical activity

Q: Q: How many cycles do cells have? Choices: - six - two - seven - four A:
A: four

Question: Q: Atoms are combined, separated, or rearranged during what? Choices: - spontaneous mutation - radiation - physical reactions - chemical reactions A:
Answer: chemical reactions

*Question*
Q: What is the measure of sound intensity levels? Choices: - octaves - moles - centimeters - decibels A:
**Answer**
decibels

*Question*
Q: What transmits nerve impulses to other cells? Choices: - fats - muscles - ions - neurons A:
**Answer**
neurons