Answer the following question given this paragraph: The cell is the basic unit of life. A cell is made of molecules, which are made of elements. All life-which means all bacteria and archaea, all protists, fungi, plants and animals-is built around the element carbon, and four categories of organic compounds: carbohydrates, lipids, proteins, and nucleic acids. These molecules come together to form a cell, which is the basis of life. One particular type of protein, enzymes, are biological catalysts, allowing biochemical reactions to proceed at the rate necessary to maintain life. One other molecule, water, is also essential to life, though water is not an organic compound. Q: What element is all life built around? Choices: - hydrogen - neon - oxygen - carbon A:
carbon
Answer the following question given this paragraph: Q: Dessication is an extreme and usually fatal form of what in animals? Choices: - diarrhea - depletion - starvation - dehydration A:
dehydration
Q: Answer the following question given this paragraph: Angiosperms are important to humans in many ways, but the most significant role of angiosperms is as food. Wheat, rye, corn, and other grains are all harvested from flowering plants. Starchy foods, such as potatoes, and legumes, such as beans, are also angiosperms. And, as mentioned previously, fruits are a product of angiosperms that increase seed dispersal and are nutritious. Q: What are angiosperms most important function to humans? Choices: - oxygen production - gasoline - water filtration - food A:
A: food
Question: Answer the following question given this paragraph: (a) Initially, the system (a copper penny and concentrated nitric acid) is at atmospheric pressure. (b) When the penny is added to the nitric acid, the volume of NO2 gas that is formed causes the piston to move upward to maintain the system at atmospheric pressure. In doing so, the system is performing work on its surroundings. The symbol E in represents the internal energy of a system, which is the sum of the kinetic energy and potential energy of all its components. It is the change in internal energy that produces heat plus work. To measure the energy changes that occur in chemical reactions, chemists usually use a related thermodynamic quantity calledenthalpy (H) (from the Greek enthalpein, meaning "to warm"). The enthalpy of a system is defined as the sum of its internal energy E plus the product of its pressure Pand volume V:. Q: To measure what changes that occur in chemical reactions, chemists usually use a related thermodynamic quantity, calledenthalpy? Choices: - ion exchange - evaporation - entropy - energy A:
Answer: energy
*Question*
Answer the following question given this paragraph: Some mirrors have a curved rather than flat surface. Curved mirrors can be concave or convex. A concave mirror is shaped like the inside of a bowl. This type of mirror forms either real or virtual images, depending on where the object is placed relative to the focal point. The focal point is the point in front of the mirror where the reflected rays intersect. You can see how concave mirrors form images in Figure below and in the interactive animation at the URL below. The animation allows you to move an object to see how its position affects the image. Concave mirrors are used behind car headlights. They focus the light and make it brighter. They are also used in some telescopes. Q: The point in front of a mirror where the reflected rays intersect is known as what? Choices: - reflective point - boundary point - periodic point - focal point A:
**Answer**
focal point
(Question)
Answer the following question given this paragraph: Neural Regulation The nervous system plays a critical role in the regulation of vascular homeostasis. The primary regulatory sites include the cardiovascular centers in the brain that control both cardiac and vascular functions. In addition, more generalized neural responses from the limbic system and the autonomic nervous system are factors. Q: What system plays a critical role in the regulation of vascular homeostasis? Choices: - endocrine system - circulatory system - renal system - nervous system A:
(Answer)
nervous system