Answer the following question given this paragraph: An amine consists of a nitrogen atom bonded to some combination of carbons and hydrogens. Q: What consists of a nitrogen atom bonded to some combination of carbons and hydrogens? Choices: - an alkali - a metalloid - a chloride - an amine A:
an amine
(Question)
Answer the following question given this paragraph: A combustion reaction is a reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat. Combustion reactions must involve O 2 as one reactant. The combustion of hydrogen gas produces water vapor. Q: What chemical element is required for a combustion reaction ? Choices: - carbon - helium - nitrogen - oxygen A:
(Answer)
oxygen
Ques: Answer the following question given this paragraph: Endocrine system: A high concentration of sugar in the blood triggers secretion of insulin by an endocrine gland called the pancreas. Insulin is a hormone that helps cells absorb sugar from the blood. Q: Which hormone helps cells absorb sugar from the blood? Choices: - estrogen - cortisol - adrenaline - insulin A:
Ans: insulin
(Q).
Answer the following question given this paragraph: The angle at which light bends when it enters a different medium depends on its change in speed. The greater the change in speed, the greater the angle of refraction is. For example, light refracts more when it passes from air to diamond than it does when it passes from air to water. That's because the speed of light is slower in diamond than it is in water. Q: The angle at which light bends when it enters a different medium is known as what? Choices: - bounce - frequency - resonance - refraction A:
(A).
refraction
Ques:Answer the following question given this paragraph: A unique mutation is found in people in a small town in Italy. The mutation protects them from developing atherosclerosis, which is the dangerous buildup of fatty materials in blood vessels. The individual in which the mutation first appeared has even been identified. Q: What disease refers to the dangerous buildup of fatty materials in blood vessels? Choices: - gout - fibrosis - arthritis - atherosclerosis A:

Ans:atherosclerosis
Answer the following question given this paragraph: The mechanical advantage of a simple machine such as a pulley is the factor by which the machine changes the force applied to it. The ideal mechanical advantage of a machine is its mechanical advantage in the absence of friction. All machines must overcome friction, so the ideal mechanical advantage is always somewhat greater than the actual mechanical advantage of the machine as it is used in the real world. Q: What is something that all machines must overcome? Choices: - stress - work - temperature - friction A:
friction