Problem: OPTIONS:
- mass
- contrast
- sound
- color
Q: Answer the following question given this paragraph: Why must hadrons be white? The color scheme is intentionally devised to explain why baryons have three quarks and mesons have a quark and an antiquark. Quark color is thought to be similar to charge, but with more values. An ion, by analogy, exerts much stronger forces than a neutral molecule. When the color of a combination of quarks is white, it is like a neutral atom. The forces a white particle exerts are like the polarization forces in molecules, but in hadrons these leftovers are the strong nuclear force. When a combination of quarks has color other than white, it exerts extremely large forceseven larger than the strong forceand perhaps cannot be stable or permanently separated. This is part of the theory of quark confinement, which explains how quarks can exist and yet never be isolated or directly observed. Finally, an extra quantum number with three values (like those we assign to color) is necessary for quarks to obey the Pauli exclusion principle. Particles such as the , which is ++ composed of three strange quarks, sss , and the , which is three up quarks, uuu, can exist because the quarks have different colors and do not have the same quantum numbers. Color is consistent with all observations and is now widely accepted. Quark theory including color is called quantum chromodynamics (QCD), also named by Gell-Mann. Q: Quantum chromodynamics combines what property with quark theory? A:
Answer: color

Problem:OPTIONS:
- solids
- mineral
- metals
- energy

Answer the following question given this paragraph: Introduction Virtually every task performed by living organisms requires energy. Energy is needed to perform heavy labor and exercise, but humans also use energy while thinking, and even during sleep. In fact, the living cells of every organism constantly use energy. Nutrients and other molecules are imported into the cell, metabolized (broken down) and possibly synthesized into new molecules, modified if needed, transported around the cell, and possibly distributed to the entire organism. For example, the large proteins that make up muscles are built from smaller molecules imported from dietary amino acids. Complex carbohydrates are broken down into simple sugars that the cell uses for energy. Just as energy is required to both build and demolish a building, energy is required for the synthesis and breakdown of molecules as well as the transport of molecules into and out of cells. In addition, processes such as ingesting and breaking down pathogenic bacteria and viruses, exporting wastes and toxins, and movement of the cell require energy. From where, and in what form, does this energy come? How do living cells obtain energy, and how do they use it? This chapter will discuss different forms of energy and the physical laws that govern energy transfer. This chapter will also describe how cells use energy and replenish it, and how chemical reactions in the cell are performed with great efficiency. Q: Virtually every task performed by living organisms requires this? A:
****
A: energy

Answer the following question given this paragraph: The skin helps maintain a constant body temperature. It keeps the body cool in two ways. Sweat from sweat glands in the skin evaporates to cool the body. Blood vessels in the skin dilate, or widen, increasing blood flow to the body surface. This allows more heat to reach the surface and radiate into the environment. The opposite happens to retain body heat. Blood vessels in the skin constrict, or narrow, decreasing blood flow to the body surface. This reduces the amount of heat that reaches the surface so less heat is lost to the environment. Q: What in the skin dilates, or widens, in order to increase blood flow to the bodys surface? A:
OPTIONS:
- veins
- pores
- tear ducts
- blood vessels
blood vessels

Answer the following question given this paragraph: Behaviors that are closely controlled by genes with little or no environmental influence are called innate behaviors . These are behaviors that occur naturally in all members of a species whenever they are exposed to a certain stimulus. Innate behaviors do not have to be learned or practiced. They are also called instinctive behaviors. An instinct is the ability of an animal to perform a behavior the first time it is exposed to the proper stimulus. For example, a dog will drool the first timeand every timeit is exposed to food. Q: What is the term for behaviors that are closely controlled by genes with little or no environmental influence? A:
OPTIONS:
- observational behaviors
- reflex behaviors
- learned behavior
- innate behaviors

Answer: innate behaviors

Question: Answer the following question given this paragraph: Greenhouse gas levels in the atmosphere are increasing. Global temperatures are increasing. Q: What type of gas levels in the atmosphere are increasing? A:
OPTIONS:
- carbonate gas
- helium gas
- hydrogen gas
- greenhouse gas
Answer: greenhouse gas

input: OPTIONS:
- convergent boundaries
- tectonic plates
- fault lines
- divergent plate boundaries Now, answer this question: Answer the following question given this paragraph: Shield volcanoes often form along divergent plate boundaries. They also form at hot spots, like Hawaii. Shield volcano eruptions are non-explosive. Q: Shield volcanoes often form along which locations? A:
A:
output:
divergent plate boundaries