Answer the following question given this paragraph: Most scientists agree that the Earth itself is not a living thing. However, the Earth does have some aspects of life. Some scientists argue that the Earth maintains homeostasis, a stable state, just like a living organisms. Q: The earth is like organisms in that it maintains a stable state, which is also known as what? A:
OPTIONS:
- ketosis
- hibernation
- dormancy
- homeostasis

Answer: homeostasis

Answer the following question given this paragraph: Insulin was the first human protein to be produced in this way. Insulin helps cells take up glucose from the blood. People with type 1 diabetes have a mutation in the gene that normally codes for insulin. Without insulin, their blood glucose rises to harmfully high levels. At present, the only treatment for type 1 diabetes is the injection of insulin from outside sources. Until recently, there was no known way to make insulin outside the human body. The problem was solved by gene cloning. The human insulin gene was cloned and used to transform bacterial cells, which could then produce large quantities of human insulin. Q: What helps cells take up glucose from the blood? A:
OPTIONS:
- oxygen
- hemoglobin
- estrogen
- insulin

Answer: insulin

Answer the following question given this paragraph: When methane gas is combusted, heat is released, making the reaction exothermic. Specifically, the combustion of 1 mol of methane releases 890.4 kilojoules of heat energy. This information can be shown as part of the balanced equation. Q: In an exothermic reaction, what, specifically, is released? A:
OPTIONS:
- water
- humidity
- precipitation
- heat

Answer:
heat