Q: What is the name of the second most electronegative element? Read this paragraph and choose the correct option from the provided answers: Oxygen has an oxidation state of -2 in most of its compounds. Oxygen is the second most electronegative element, so it also tends to be assigned all shared electrons. Exceptions include O 2 (oxidation state = 0), peroxides, in which two oxygen atoms are connected by a single bond (oxidation state usually = -1), and any compound in which oxygen is bonded to fluorine (pretty rare and reactive). Choices: - nitrogen - Hydrogen - carbon - oxygen A:
oxygen

Q: What consists of two or more elements and forms as a result of a chemical reaction? Read this paragraph and choose the correct option from the provided answers: Living things consist of matter, which can be an element or a compound. A compound consists of two or more elements and forms as a result of a chemical reaction. Choices: - molecule - particle - protein - compound A:
compound

Q: Q: What term means opposition to the flow of electric charges that occurs when electric current travels through matter? Read this paragraph and choose the correct option from the provided answers: Resistance is opposition to the flow of electric charges that occurs when electric current travels through matter. The SI unit of resistance is the ohm (named for the scientist Georg Ohm, whom you can read about below). Resistance is caused by electrons in a current bumping into electrons and ions in the matter through which the current is flowing. Resistance is similar to the friction that resists the movement of one surface as it slides over another. Resistance reduces the amount of current that can travel through the material because some of the electrical energy is converted to other forms of energy. For example, when electric current flows through the tungsten wire inside an incandescent light bulb, the tungsten resists the flow of electric charge, and some of the electrical energy is converted to light and thermal energy. Choices: - polarity - antagonism - diffusion - resistance A:
A: resistance

Question: Q: What do you call the movement of molecules across a membrane without the input of energy? Read this paragraph and choose the correct option from the provided answers: Recall that the cell membrane is semipermeable. It does not allow everything to pass through. Some molecules can pass easily through your cell membranes, while others have more difficulty. Sometimes molecules need the help of special transport proteins to move across the cell membrane. Some molecules even need an input of energy to help get them across the cell membrane. The movement of molecules across a membrane without the input of energy is known as passive transport . When energy (ATP) is needed, the movement is known as active transport . Active transport moves molecules against their concentration gradient, from an area of low concentration to an area of high concentration. Choices: - obvious transport - reactive transport - active transport - passive transport A:
Answer: passive transport

*Question*
Q: Cardiovascular disease, some types of cancer, type 2 diabetes, and obesity are considered what kind of preventable diseases? Read this paragraph and choose the correct option from the provided answers: Regular physical exercise is important in preventing lifestyle diseases such as cardiovascular disease, some types of cancer, type 2 diabetes, and obesity. Regular exercise also improves the health of the muscular system. Muscles that are exercised are bigger and stronger than muscles that are not exercised. Choices: - environmental diseases - atmosphere diseases - age diseases - lifestyle diseases A:
**Answer**
lifestyle diseases

Q: The number of neutrons and electrons may vary or change in an atom. what happens to the number of protons? Read this paragraph and choose the correct option from the provided answers: The number of protons per atom is always the same for a given element. However, the number of neutrons may vary, and the number of electrons can change. Choices: - decreases - increases - depends - remains the same A:
remains the same