Answer the following question given this paragraph: Tight junctions are common at epithelia, which are sheets of cells that form a boundary between a mass of cells and a cavity or space (a lumen ). The membranes of these cells join together, forming a virtually impermeable barrier to fluid. Tight junctions essentially seal adjacent epithelial cells in a narrow layer just beneath their apical surface, which is the portion of the cell exposed to the lumen. The rest of the cell surface is known as the basolateral surface. Tight junctions prevent integral membrane proteins from moving between the apical and basolateral surface, maintaining the properties of those distinct surfaces. For example, receptor-mediated endocytosis occurs at the apical surface and exocytosis at the basolateral surface. Q: What is the term for sheets of cells that form a boundary between a mass of cells and a cavity or space? Choices: - mucus - myelin - ganglion - epithelia A:
epithelia

Answer the following question given this paragraph: Triglycerides are the main form of stored energy in animals. This type of lipid is commonly called fat. Triglycerides are composed of a glycerol and three fatty acid chains. An example is shown in Figure below . In humans, triglycerides are a mechanism for storing unused calories, and their high concentration in blood correlates with the consumption of excess starches and other carbohydrate-rich foods. Q: What stored form of energy is made up of glycerol and three fatty acid chains? Choices: - hydrocarbons - carbohydrates - particulates - triglycerides A:
triglycerides

Answer the following question given this paragraph: Amphibians generally lay large number of eggs. Often, many adults lay eggs in the same place at the same time. This helps to ensure that eggs will be fertilized and at least some of the embryos will survive. Once eggs have been laid, most amphibians are done with their parenting. Q: When does most amphibians' parenting end? Choices: - after adolescence - once offspring reach adulthood - never - once eggs have been laid A:
once eggs have been laid

Answer the following question given this paragraph: Q: What unit of measurement is typically used for rainfall? Choices: - gallons - feet - pounds - inches A:
inches