Q: What human disease is caused by a defective enzyme that is unable to produce melanin, the pigment responsible for the color of skin and hair? Read this paragraph and choose the correct option from the provided answers: untreated, it produces severe brain damage and mental retardation. Albinism is caused by a defective enzyme that is unable to produce melanin, the pigment responsible for the color of skin and hair. Cystic fibrosis, the most common inherited disease in the United States, blocks pancreatic function and causes thick mucus secretions that make breathing difficult. An area of intense research in combating cancer involves the synthesis of drugs that stop uncontrolled cell growth by interfering with DNA replication. Choices: - hemophilia - anemia - mutations - albinism A:
albinism

(Question)
Q: In an environment, symbiosis, competition, and relying on other organisms for food are examples of what? Read this paragraph and choose the correct option from the provided answers: All living things depend on their environment to supply them with what they need, including food, water, and shelter. Their environment consists of physical factorssuch as soil, air, and temperatureand also of other organisms. An organism is an individual living thing. Many living things interact with other organisms in their environment. In fact, they may need other organisms in order to survive. For example, living things that cannot make their own food must eat other organisms for food. Other interactions between living things include symbiosis and competition. Choices: - collaboration - commensalism - adaptation - interaction A:
(Answer)
interaction

Ques: Q: What is the"packet" of energy called that the nucleus emits during gamma decay? Read this paragraph and choose the correct option from the provided answers: Gamma rays are produced during gamma decay of an excited nucleus. During gamma decay, the nucleus emits a "packet" of energy called a gamma particle. Choices: - transient particle - radioactive particle - ultraviolet particle - gamma particle A:
Ans: gamma particle

(Q).
Q: If a gyroscope is not spinning, it acquires angular momentum in the direction of what? Read this paragraph and choose the correct option from the provided answers: This same logic explains the behavior of gyroscopes. Figure 10.31 shows the two forces acting on a spinning gyroscope. The torque produced is perpendicular to the angular momentum, thus the direction of the torque is changed, but not its magnitude. The gyroscope precesses around a vertical axis, since the torque is always horizontal and perpendicular to L . If the gyroscope is not spinning, it acquires angular momentum in the direction of the torque ( L falling over just as we would expect. Choices: - gravity - acceleration - velocity - torque A:
(A).
torque

Ques:Q: What type of gases are used for balloons, light bulbs and lighted signs? Read this paragraph and choose the correct option from the provided answers: Noble gases are used for balloons, light bulbs, and lighted signs. Choices: - ignoble - helium - heavy - noble A:

Ans:noble

Q: What happens when a sodium atom loses an electron? Read this paragraph and choose the correct option from the provided answers: By losing an electron, the sodium atom becomes a sodium ion. It now has one less electron than protons, giving it a charge of +1. Positive ions such as sodium are given the same name as the element. The chemical symbol has a plus sign to distinguish the ion from an atom of the element. The symbol for a sodium ion is Na + . Choices: - becomes calcium - gains a proton - combines with hydrogen - becomes sodium ion A:
becomes sodium ion