Answer the following question given this paragraph: Paint keeps oxygen and water from coming into direct contact with the metal, which prevents corrosion. Paint is more necessary because salt is an electrolyte that increases the conductivity of water and facilitates the flow of electric current between anodic and cathodic sites. Q: Paint keeps oxygen and water from coming into direct contact with the metal, which prevents what? Choices: - heat - evaporation - filtration - corrosion A:
corrosion
Answer the following question given this paragraph: Radiotherapy is effective against cancer because cancer cells reproduce rapidly and, consequently, are more sensitive to radiation. The central problem in radiotherapy is to make the dose for cancer cells as high as possible while limiting the dose for normal cells. The ratio of abnormal cells killed to normal cells killed is called the therapeutic ratio, and all radiotherapy techniques are designed to enhance this ratio. Radiation can be concentrated in cancerous tissue by a number of techniques. One of the most prevalent techniques for well-defined tumors is a geometric technique shown in Figure 32.13. A narrow beam of radiation is passed through the patient from a variety of directions with a common crossing point in the tumor. This concentrates the dose in the tumor while spreading it out over a large volume of normal tissue. The external radiation can be x-rays, 60 Co rays, or ionizing-particle beams produced by accelerators. Accelerator-produced beams of neutrons, -mesons , and heavy ions such as nitrogen nuclei have been employed, and these can be quite effective. These particles have larger QFs or RBEs and sometimes can be better localized, producing a greater therapeutic ratio. But accelerator radiotherapy is much more expensive and less frequently employed than other forms. Q: Radiotherapy is effective against cancer because cancer cells reproduce rapidly and, consequently, are more sensitive to this? Choices: - UV light - separation - destruction - radiation A:
radiation
Q: Answer the following question given this paragraph: Figure 6.3 A cell moves through a series of phases in an orderly manner. During interphase, G1 involves cell growth and protein synthesis, the S phase involves DNA replication and the replication of the centrosome, and G2 involves further growth and protein synthesis. The mitotic phase follows interphase. Mitosis is nuclear division during which duplicated chromosomes are segregated and distributed into daughter nuclei. Usually the cell will divide after mitosis in a process called cytokinesis in which the cytoplasm is divided and two daughter cells are formed. Q: Mitosis is nuclear division during which duplicated chromosomes are segregated and distributed into what? Choices: - father nuclei - long nuclei - woman nuclei - daughter nuclei A:
A: daughter nuclei
Question: Answer the following question given this paragraph: There are some properties that all liquids have. The liquid that we are most familiar with is probably water, and it has these properties. Other liquids have them as well, which is something to keep in mind. All liquids have a certain portion of their particles having enough energy to enter the gas phase, and if these particles are at the surface of the liquid, they do so ( - ball-ch10_s03_f01). The formation of a gas from a liquid at temperatures below the boiling point is called evaporation. At these temperatures, the material in the gas phase is called vapor, rather than gas; the term gas is reserved for when the gas phase is the stable phase. Figure 10.5 Evaporation. Q: What do we call the formation of a gas from a liquid at temperatures below the boiling point? Choices: - melting - pulverization - steaming - evaporation A:
Answer: evaporation
*Question*
Answer the following question given this paragraph: Kidney diseases include kidney stones, infections, and kidney failure due to diabetes. Kidney failure may be treated with dialysis. Q: Which organ's diseases include kidney stones, infections, and kidney failure due to diabetes? Choices: - lungs - heart - pancreas - kidney A:
**Answer**
kidney
(Question)
Answer the following question given this paragraph: Newton's second law of motion explains the weight of objects. Weight is a measure of the force of gravity pulling on an object of a given mass. It's the force (F) in the acceleration equation that was introduced above:. Q: What is a measure of the force of gravity pulling on an object of a given mass? Choices: - scale - effect - solidity - weight A:
(Answer)
weight