Answer the following question given this paragraph: The process in which organ systems work to maintain a stable internal environment is called homeostasis . Keeping a stable internal environment requires constant adjustments. Here are just three of the many ways that human organ systems help the body maintain homeostasis:. Q: The process in which organ systems work to maintain a stable internal environment is called what? Choices: - consciousness - thrombosis - ketosis - homeostasis A:
homeostasis
Answer the following question given this paragraph: Dentists occasionally use metallic mixtures called amalgams for fillings. If an amalgam contains zinc, however, water can contaminate the amalgam as it is being manipulated, producing hydrogen gas under basic conditions. As the filling hardens, the gas can be released, causing pain and cracking the tooth. Write a balanced chemical equation for this reaction. Q: Dentists occasionally use metallic mixtures called amalgams for what? Choices: - tools - anesthesia - braces - fillings A:
fillings
Q: Answer the following question given this paragraph: CHAPTER REVIEW 3.1 The Cell Membrane The cell membrane provides a barrier around the cell, separating its internal components from the extracellular environment. It is composed of a phospholipid bilayer, with hydrophobic internal lipid "tails" and hydrophilic external phosphate "heads. " Various membrane proteins are scattered throughout the bilayer, both inserted within it and attached to it peripherally. The cell membrane is selectively permeable, allowing only a limited number of materials to diffuse through its lipid bilayer. All materials that cross the membrane do so using passive (non energy-requiring) or active (energy-requiring) transport processes. During passive transport, materials move by simple diffusion or by facilitated diffusion through the membrane, down their concentration gradient. Water passes through the membrane in a diffusion process called osmosis. During active transport, energy is expended to assist material movement across the membrane in a direction against their concentration gradient. Active transport may take place with the help of protein pumps or through the use of vesicles. Q: How does a cell's membrane keep extracellular materials from mixing with it's internal components? Choices: - absorbs extracellular materials - repels extracellular materials - destroys extracellular materials - provides a barrier A:
A: provides a barrier
Question: Answer the following question given this paragraph: Myopia is corrected with a concave lens, while hyperopia is corrected with a convex lens. Q: What lens shape corrects myopia? Choices: - flat - convex - curve - concave A:
Answer: concave
*Question*
Answer the following question given this paragraph: Mass The property of a body to remain at rest or to remain in motion with constant velocity is called inertia. Newton's first law is often called the law of inertia. As we know from experience, some objects have more inertia than others. It is obviously more difficult to change the motion of a large boulder than that of a basketball, for example. The inertia of an object is measured by its mass. Roughly speaking, mass is a measure of the amount of "stuff" (or matter) in something. The quantity or amount of matter in an object is determined by the numbers of atoms and molecules of various types it contains. Unlike weight, mass does not vary with location. The mass of an object is the same on Earth, in orbit, or on the surface of the Moon. In practice, it is very difficult to count and identify all of the atoms and molecules in an object, so masses are not often determined in this manner. Operationally, the masses of objects are determined by comparison with the standard kilogram. Q: What is the other name of newton's first law? Choices: - law of matter - law of momentum - mass and matter - law of inertia A:
**Answer**
law of inertia
(Q).
Answer the following question given this paragraph: Q: What is the process that ventilates lungs called? Choices: - photosynthesis - reproduction - perspiration - breathing A:
(A).
breathing