Q: Q: What is the term for a formula that shows the elements in a compound in their lowest whole-number ratio? Read this paragraph and choose the correct option from the provided answers: An empirical formula is a formula that shows the elements in a compound in their lowest whole-number ratio. Glucose is an important simple sugar that cells use as their primary source of energy. Its molecular formula is C 6 H 12 O 6 . Since each of the subscripts is divisible by 6, the empirical formula for glucose is CH 2 O. When chemists analyze an unknown compound, often the first step is to determine its empirical formula. There are a great many compounds whose molecular and empirical formulas are the same. If the molecular formula cannot be simplified into a smaller whole-number ratio, as in the case of H 2 O or P 2 O 5 , then the empirical formula is also the molecular formula. Choices: - measured formula - intrinsic formula - Dwarf Formula - empirical formula A:
A: empirical formula

Q: Q: What two substances do plants give off when they make food? Read this paragraph and choose the correct option from the provided answers: Choices: - water and oil - carbon dioxide and oxygen - chlorophyll and nitrogen - oxygen and water A:
A: oxygen and water

Q: Q: What theory states that all organisms are made up of one or more cells? Read this paragraph and choose the correct option from the provided answers: According to the cell theory, all organisms are made up of one or more cells. Cells are the sites where all life processes take place. Cells come only from pre-existing cells. New cells forms when existing cells divide. Choices: - the molecular anatomy theory - the atomic theory - the micro theory - the cell theory A:
A: the cell theory

Q: Q: What term refers to an animal that sleeps during the day and is active at night? Read this paragraph and choose the correct option from the provided answers: Many animals go through daily cycles. Daily cycles of behavior are called circadian rhythms. For example, most animals go to sleep when the sun sets down and wake up when the sun rises. These animals are active during the day and called diurnal. Other animals go to sleep when the sun rises and wake up when the sun sets. These animals are active during the night and called nocturnal. Many owls, like the owls in Figure below , are nocturnal. Like some other nocturnal animals, they have large eyes that are specially adapted for seeing when light levels are low. Choices: - diurnal - crepuscular - solitary - nocturnal A:
A: nocturnal