Q: Answer the following question given this paragraph: Q: Like the marketplace, the metabolic economy is regulated by what basic principle? Choices: - jobs and demand - price and demand - industrial and demand - supply and demand A:
A: supply and demand

Q: Answer the following question given this paragraph: The pond on the left is covered with algae because there is too much nitrogen in the water. The red-shaded area in the map on the right is a dead zone in the Gulf of Mexico. It's called the hypoxic ("low oxygen") zone in the figure. Q: What does hypoxic mean? Choices: - standard oxygen level - Oxygen rate - higher oxygen - low oxygen A:
A: low oxygen

Q: Answer the following question given this paragraph: Climate is the most important factor in determining the type of soil that forms in a particular area. Q: What is the most important factor in determining the type of soil that forms in a particular area? Choices: - landscape - altitude - migration - climate A:
A: climate

Q: Answer the following question given this paragraph: Connections of Proteins to Glucose Metabolism Proteins are broken down by a variety of enzymes in cells. Most of the time, amino acids are recycled into new proteins. If there are excess amino acids, however, or if the body is in a state of famine, some amino acids will be shunted into pathways of glucose catabolism. Each amino acid must have its amino group removed prior to entry into these pathways. The amino group is converted into ammonia. In mammals, the liver synthesizes urea from two ammonia molecules and a carbon dioxide molecule. Thus, urea is the principal waste product in mammals from the nitrogen originating in amino acids, and it leaves the body in urine. Q: Amino acids broken down by metabolic process are mostly recycled into new what? Choices: - lipids - hormones - enzymes - proteins A:
A: proteins