Answer the following question given this paragraph: Two important devices depend on electromagnetic induction: electric generators and electric transformers. Both devices play critical roles in producing and regulating the electric current we depend on in our daily lives. Electric generators use electromagnetic induction to change kinetic energy to electrical energy. They produce electricity in power plants. Electric transformers use electromagnetic induction to change the voltage of electric current. Some transformers increase voltage and other decrease voltage. Q: What type of generators use electromagnetic induction to change kinetic energy to electrical energy? Choices: - conductors - radiators - thermal generators - electric generators A:
electric generators
Answer the following question given this paragraph: The general term peptide refers to an amino acid chain of unspecified length. However, chains of about 50 amino acids or more are usually called proteins or polypeptides. In its physiologically active form, a protein may be composed of one or more polypeptide chains. For peptides and proteins to be physiologically active, it is not enough that they incorporate certain amounts of specific amino acids. The order, or sequence, in which the amino acids are connected is also of critical importance. Bradykinin is a nine-amino acid peptide produced in the blood that has the following amino acid sequence: arg-pro-pro-gly-phe-ser-pro-phe-arg This peptide lowers blood pressure, stimulates smooth muscle tissue, increases capillary permeability, and causes pain. When the order of amino acids in bradykinin is reversed, arg-phe-pro-ser-phe-gly-pro-pro-arg the peptide resulting from this synthesis shows none of the activity of bradykinin. Saylor URL: http://www. saylor. org/books. Q: The general term peptide refers to an amino acid chain of what? Choices: - large length - incomplete length - small length - unspecified length A:
unspecified length
Q: Answer the following question given this paragraph: Ore is extracted from rock by heap leaching, flotation, or smelting. Q: What is extracted from rock by heap leaching, flotation, or smelting? Choices: - methane - copper - fuel - ore A:
A: ore
Question: Answer the following question given this paragraph: 7.4 The Thoracic Cage The thoracic cage protects the heart and lungs. It is composed of 12 pairs of ribs with their costal cartilages and the sternum. The ribs are anchored posteriorly to the 12 thoracic vertebrae. The sternum consists of the manubrium, body, and xiphoid process. The manubrium and body are joined at the sternal angle, which is also the site for attachment of the second ribs. Ribs are flattened, curved bones and are numbered 112. Posteriorly, the head of the rib articulates with the costal facets located on the bodies of thoracic vertebrae and the rib tubercle articulates with the facet located on the vertebral transverse process. The angle of the ribs forms the most posterior portion of the thoracic cage. The costal groove in the inferior margin of each rib carries blood vessels and a nerve. Anteriorly, each rib ends in a costal cartilage. True ribs (17) attach directly to the sternum via their costal cartilage. The false ribs (812) either attach to the sternum indirectly or not at all. Ribs 810 have their costal cartilages attached to the cartilage of the next higher rib. The floating ribs (1112) are short and do not attach to the sternum or to another rib. Q: What cage composed of 12 pairs of ribs, with their costal cartilages and the sternum, protects the heart and lungs? Choices: - sacral - lumbar - cervical - thoracic A:
Answer: thoracic
*Question*
Answer the following question given this paragraph: The cell membrane is a thin coat of phospholipids that surrounds the cell. It's like the "skin" of the cell. It forms a physical boundary between the contents of the cell and the environment outside the cell. It also controls what enters and leaves the cell. The cell membrane is sometimes called the plasma membrane. Q: What is the thin coat of phospholipids that surrounds the cell and controls what enters and leaves? Choices: - blood - plasma - myelin - cell membrane A:
**Answer**
cell membrane
*Question*
Answer the following question given this paragraph: Selective precipitation can also be used in qualitative analysis. In this method, reagents are added to an unknown chemical mixture in order to induce precipitation. Certain reagents cause specific ions to precipitate out; therefore, the addition of the reagent can be used to determine whether the ion is present in the solution. Q: In qualitative analysis, reagents are added to an unknown chemical mixture in order to induce what? Choices: - motion - sunlight - erosion - precipitation A:
**Answer**
precipitation