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? Choices: - solids - mineral - metals - energy A:
energy
(Question)
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? Choices: - veins - pores - tear ducts - blood vessels A:
(Answer)
blood vessels
Ques: 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? Choices: - observational behaviors - reflex behaviors - learned behavior - innate behaviors A:
Ans: innate behaviors
(Q).
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? Choices: - carbonate gas - helium gas - hydrogen gas - greenhouse gas A:
(A).
greenhouse gas
Ques:Answer the following question given this paragraph: At a given temperature, individual particles of a substance have a range of kinetic energies. Q: A statement is considered what if it is open to being falsified? Choices: - valid - premature - untrue - hypothesis A:

Ans:hypothesis
Answer the following question given this paragraph: Beneath the crust is the mantle . The mantle is made of hot, solid rock. They know this because of seismic waves, meteorites, and the heat that comes from inside the planet. Mantle rock is mostly peridotite , which is rich in iron and magnesium ( Figure below ). Peridotite is rare at Earth's surface. Q: Made of hot, solid rock, the mantle is beneath what layer of the earth? Choices: - liquid - volcanic - core - crust A:
crust