Q: What system is the brain the control center of? Read this paragraph and choose the correct option from the provided answers: The brain is the control center of the nervous system. It controls virtually all mental and physical processes. Choices: - adrenal - fibrous - circulatory - nervous A:
nervous

Q: Ionic, covalent, and hydrogen are three important types of what type of interaction between different types of atoms? Read this paragraph and choose the correct option from the provided answers: 2.2 | Chemical Bonds By the end of this section, you will be able to: Explain the relationship between molecules and compounds Distinguish between ions, cations, and anions Identify the key difference between ionic and covalent bonds Distinguish between nonpolar and polar covalent bonds Explain how water molecules link via hydrogen bonds Atoms separated by a great distance cannot link; rather, they must come close enough for the electrons in their valence shells to interact. But do atoms ever actually touch one another? Most physicists would say no, because the negatively charged electrons in their valence shells repel one another. No force within the human bodyor anywhere in the natural worldis strong enough to overcome this electrical repulsion. So when you read about atoms linking together or colliding, bear in mind that the atoms are not merging in a physical sense. Instead, atoms link by forming a chemical bond. A bond is a weak or strong electrical attraction that holds atoms in the same vicinity. The new grouping is typically more stableless likely to react againthan its component atoms were when they were separate. A more or less stable grouping of two or more atoms held together by chemical bonds is called a molecule. The bonded atoms may be of the same element, as in the case of H2, which is called molecular hydrogen or hydrogen gas. When a molecule is made up of two or more atoms of different elements, it is called a chemical compound. Thus, a unit of water, or H2O, is a compound, as is a single molecule of the gas methane, or CH4. Three types of chemical bonds are important in human physiology, because they hold together substances that are used by the body for critical aspects of homeostasis, signaling, and energy production, to name just a few important processes. These are ionic bonds, covalent bonds, and hydrogen bonds. Choices: - forms - conflicts - levels - bonds A:
bonds

Q: Q: What to tadpoles develop into? Read this paragraph and choose the correct option from the provided answers: Frogs typically lay their eggs in puddles, ponds, or lakes. Their larvae, or tadpoles , have gills, a tail, but no legs, and need to live in water. If fact, they are quite similar to a fish. Tadpoles develop into adult frogs in water ( Figure below ). During this transformation, they develop lungs, lose their tails and form their four legs. Choices: - toads - mosquitos - snakes - frogs A:
A: frogs

Question: Q: What substance can be identified by their atomic number and mass number? Read this paragraph and choose the correct option from the provided answers: Elements can be identified by their atomic number and mass number. Choices: - structures - compounds - solutions - elements A:
Answer: elements

*Question*
Q: Bacteria can be used to make cheese from milk. the bacteria turn the milk sugars into what? Read this paragraph and choose the correct option from the provided answers: Bacteria can be used to make cheese from milk. The bacteria turn the milk sugars into lactic acid. The acid is what causes the milk to curdle to form cheese. Bacteria are also involved in producing other foods. Yogurt is made by using bacteria to ferment milk ( Figure below ). Fermenting cabbage with bacteria produces sauerkraut. Choices: - acetic acid - ionic acid - hydrochloric acid - lactic acid A:
**Answer**
lactic acid

*Question*
Q: Not getting enough calcium may cause what health problem? Read this paragraph and choose the correct option from the provided answers: Not getting enough minerals can cause health problems. For example, not getting enough calcium may cause osteoporosis. This is a disease in which the bones become porous so they break easily. Getting too much of some minerals can also cause health problems. Many people get too much sodium. Sodium is added to most packaged foods. People often add more sodium to their food by using table salt. Too much sodium has been linked to high blood pressure in some people. Choices: - blindness - arthritis - diabetes - osteoporosis A:
**Answer**
osteoporosis