Q: The main advantage of urea is its very low what? Choices: - temperature - cost - energy requirement - toxicity A:
toxicity

Q: How many different amino acids make up proteins. Choices: - 14 - 25 - 30 - 20 A:
20

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

Question: Q: Radon (rn) is a radioactive gas formed by the decay of naturally occurring uranium in rocks such as granite. it tends to collect in the basements of houses and poses a significant health risk if present in indoor air. many states now require that houses be tested for radon before they are what? Choices: - modified - seen - built - sold A:
Answer: sold

*Question*
Q: What part of the body does emphysema affect? Choices: - bones - brain - heart - lungs A:
**Answer**
lungs

(Question)
Q: What is a collection of lymphatic tissue that combines with epithelial tissue lining the mucosa throughout the body? Choices: - unassociated lymphoid tissue - spheroids associated lymphoid tissue ( malt ) - cottony associated lymphoid tissue ( malt ) - mucosa associated lymphoid tissue (malt) A:
(Answer)
mucosa associated lymphoid tissue (malt)