Q: Eukaryotic cells contain what type of structures that possess special functions?   Read this paragraph and choose the correct option from the provided answers:  Eukaryotic cells contain a nucleus and other organelles. They include the mitochondrion, endoplasmic reticulum, Golgi apparatus, vesicles, vacuoles, lysosomes, and—in animal cells—centrioles. Each type of organelle has a special function.   Choices:  - cell membranes  - fibers  - chloroplasts  - organelles   A:
organelles

Q: What 3 types of friction occur between solid surfaces?   Read this paragraph and choose the correct option from the provided answers:  Friction is the force that opposes motion between any surfaces that are in contact. There are four types of friction: static, sliding, rolling, and fluid friction. Static, sliding, and rolling friction occur between solid surfaces. Fluid friction occurs in liquids and gases. All four types of friction are described below. You can see a video demonstration of the different types at this URL:.   Choices:  - static , arching , rolling  - static,desending,sliding  - static , ascending , rolling  - static, sliding, rolling   A:
static, sliding, rolling

Q: The rate of a reaction can be expressed either in terms of the decrease in the amount of what or the increase in the amount of a product per unit time?   Read this paragraph and choose the correct option from the provided answers:  Summary 12.1 Chemical Reaction Rates The rate of a reaction can be expressed either in terms of the decrease in the amount of a reactant or the increase in the amount of a product per unit time. Relations between different rate expressions for a given reaction are derived directly from the stoichiometric coefficients of the equation representing the reaction. 12.2 Factors Affecting Reaction Rates The rate of a chemical reaction is affected by several parameters. Reactions involving two phases proceed more rapidly when there is greater surface area contact. If temperature or reactant concentration is increased, the rate of a given reaction generally increases as well. A catalyst can increase the rate of a reaction by providing an alternative pathway that causes the activation energy of the reaction to decrease. 12.3 Rate Laws Rate laws provide a mathematical description of how changes in the amount of a substance affect the rate of a chemical reaction. Rate laws are determined experimentally and cannot be predicted by reaction stoichiometry. The order of reaction describes how much a change in the amount of each substance affects the overall rate, and the overall order of a reaction is the sum of the orders for each substance present in the reaction. Reaction orders are typically first order, second order, or zero order, but fractional and even negative orders are possible. 12.4 Integrated Rate Laws Differential rate laws can be determined by the method of initial rates or other methods. We measure values for the initial rates of a reaction at different concentrations of the reactants. From these measurements, we determine the order of the reaction in each reactant. Integrated rate laws are determined by integration of the corresponding differential.   Choices:  - plasma  - sulfate  - isotope  - reactant   A:
reactant

Q: Which ancient fish has just two living species and is at risk of extinction?   Read this paragraph and choose the correct option from the provided answers:  Coelacanths are ancient fish with just two living species. They are at risk of extinction because of their very small numbers.   Choices:  - latimeria  - hominids  - squids  - coelacanths   A:
