Q: Diffusion is an effective transport mechanism over the spatial scales typically found at what level? Choices: - electromagnetic - molecular - atom - cellular A:
cellular

Q: What is the hollow sac like organ that stores urine until it is excreted? Choices: - kidney - ureter - tumor - bladder A:
bladder

Q: Q: What is glucose used for the bacteria? Choices: - reproduction - fuel - energy - food A:
A: food

Question: Q: What are the two main types of sedimentary rocks? Choices: - sandstone and shale - shale and limestone - basalt and dolomite - clastic and chemical A:
Answer: clastic and chemical

*Question*
Q: What is the main sex hormone in males called? Choices: - estrogen - caffeine - methane - testosterone A:
**Answer**
testosterone

*Question*
Q: What are subatomic particles of the nucleus called? Choices: - baryons - cores - isotopes - nucleons A:
**Answer**
nucleons