Answer the following question given this paragraph: Traditionally, mammals were divided into groups based on their characteristics. Scientists took into consideration their anatomy (body structure), their habitats, and their feeding habits. Mammals are divided into three subclasses and about 26 orders. Some of the groups of mammals include:. Q: Traditionally, mammals were divided into groups based on what? Choices: - their sizes - their colors - their behaviors - their characteristics A:
their characteristics
Answer the following question given this paragraph: The exothermic reaction on the left releases energy. The endothermic reaction on the right consumes energy. Q: What do you call a reaction that consumes energy as it is carried out? Choices: - autotrophic - exothermic - unstable - endothermic A:
endothermic
Q: Answer the following question given this paragraph: Biochemical compounds are carbon-based compounds that make up living organisms. There are four main classes of biochemical compounds: carbohydrates, proteins, lipids, and nucleic acids. The classes have different structures and functions. Q: Living organisms are made up of what type of carbon-based compounds? Choices: - microbial - biophysical - synthetic - biochemical A:
A: biochemical
Question: Answer the following question given this paragraph: The release of calcium ions initiates muscle contractions. Watch this video (http://openstaxcollege. org/l/calciumrole) to learn more about the role of calcium. (a) What are "T-tubules" and what is their role? (b) Please describe how actinbinding sites are made available for cross-bridging with myosin heads during contraction. Q: The release of calcium ions initiates what? Choices: - exhalation - cramps - spasms - muscle contractions A:
Answer: muscle contractions
*Question*
Answer the following question given this paragraph: The hybridization model helps explain molecules with double or triple bonds. Consider the ethene molecule (C 2 H 4 ), which contains a double covalent bond between the two carbon atoms and single bonds between the carbon atoms and the hydrogen atoms. The entire molecule is planar. Q: Which model helps explain molecules with double or triple bonds? Choices: - salinity model - reactivity model - particle model - hybridization model A:
**Answer**
hybridization model
(Question)
Answer the following question given this paragraph: Particles of gas are constantly moving in all directions at random. As a result, they are always bumping into each other and other things. This is modeled in the Figure below . The force of the particles against things they bump into creates pressure. Pressure is defined in physics as the amount of force pushing against a given area. How much pressure a gas exerts depends on the number of gas particles in a given space and how fast they are moving. The more gas particles there are and the faster they are moving, the greater the pressure they create. To learn more about gas pressure and how to measure it, go to this URL: http://www. wisc-online. com/objects/ViewObject. aspx?ID=GCH5004 . Q: What is defined in physics as the amount of force pushing against a given area? Choices: - energy - gravity - resistance - pressure A:
(Answer)
pressure