Q: What do obligate aerobes need to live? Read this paragraph and choose the correct option from the provided answers: Organisms that are obligate aerobes need oxygen to live. That is, they use oxygen as a terminal electron acceptor while making ATP (see the "Cellular Respiration" concept). Humans are obligate aerobes, and so are Mycobacterium tuberculosis bacteria. M. tuberculosis causes tuberculosis (TB). Obligate aerobes are found only in places with molecular oxygen. Choices: - blood - acid - dioxide - oxygen A:
oxygen

Q: In this type of reaction, an element replaces another element in a compound, and the element is in any state of matter but is not an ion? Read this paragraph and choose the correct option from the provided answers: A single-replacement reaction is one in which an element replaces another element in a compound. An element is in either the solid, liquid, or gas state and is not an ion. The example below shows the reaction of solid magnesium metal with aqueous silver nitrate to form aqueous magnesium nitrate and silver metal. Choices: - double-replacement reaction - replication reaction - polar reaction - single-replacement reaction A:
single-replacement reaction

Q: Q: What forms when a solute dissolves in a solvent? Read this paragraph and choose the correct option from the provided answers: A solution forms when a solute dissolves in a solvent. The rate of dissolving is faster with stirring, a higher temperature, or greater surface area. Many solutes are soluble in water because water is polar. Choices: - chemical - gas - liquid - solution A:
A: solution

Question: Q: If the amount of force of that is applied is increased, what happens to the work that a machine is producing? Read this paragraph and choose the correct option from the provided answers: Machines make work easier by increasing the amount of force that is applied, increasing the distance over which the force is applied, or changing the direction in which the force is applied. Contrary to popular belief, machines do not increase the amount of work that is done. They just change how the work is done. So if a machine increases the force applied, it must apply the force over a shorter distance. Similarly, if a machine increases the distance over which the force is applied, it must apply less force. Choices: - it's unchanged - it is harder - it's variable - it is easier A:
Answer: it is easier

*Question*
Q: Worms grow to adult size without going through what stage? Read this paragraph and choose the correct option from the provided answers: In some species, the same individual produces both sperm and eggs. But worms mate to exchange sperm, rather than self-fertilizing their own eggs. Fertilized eggs are deposited in a mucous cocoon. Offspring emerge from the cocoon looking like small adults. They grow to adult size without going through a larval stage. Choices: - egg - development - growth - larval A:
**Answer**
larval

Q: Q: What is the largest class of elements? Read this paragraph and choose the correct option from the provided answers: Metals are elements that are good conductors of electricity. They are the largest class of elements. Many metals are shiny, ductile, and malleable. They are also good conductors of heat. Almost all metals are solids are room temperature. Choices: - organics - acids - oils - metals A:
A: metals