Answer the following question given this paragraph: Waves cause the rippled surface of the ocean. Q: What cause the rippled surface of the ocean? Choices: - winds - tides - earthquakes - waves A:
waves
Answer the following question given this paragraph: The population is an important level of organization in ecology. It is also the unit of microevolution. Q: What is an important level of organization in ecology and the unit of microevolution? Choices: - macro - system - organization - population A:
population
Q: Answer the following question given this paragraph: Tonicity Tonicity describes how an extracellular solution can change the volume of a cell by affecting osmosis. A solution's tonicity often directly correlates with the osmolarity of the solution. Osmolarity describes the total solute concentration of the solution. A solution with low osmolarity has a greater number of water molecules relative to the number of solute particles; a solution with high osmolarity has fewer water molecules with respect to solute particles. In a situation in which solutions of two different osmolarities are separated by a membrane permeable to water, though not to the solute, water will move from the side of the membrane with lower osmolarity (and more water) to the side with higher osmolarity (and less water). This effect makes sense if you remember that the solute cannot move across the membrane, and thus the only component in the system that can movethe watermoves along its own concentration gradient. An important distinction that concerns living systems is that osmolarity measures the number of particles (which may be molecules) in a solution. Therefore, a solution that is cloudy with cells may have a lower osmolarity than a solution that is clear, if the second solution contains more dissolved molecules than there are cells. Hypotonic Solutions Three termshypotonic, isotonic, and hypertonicare used to relate the osmolarity of a cell to the osmolarity of the extracellular fluid that contains the cells. In a hypotonic situation, the extracellular fluid has lower osmolarity than the fluid inside the cell, and water enters the cell. (In living systems, the point of reference is always the cytoplasm, so the prefix hypo- means that the extracellular fluid has a lower concentration of solutes, or a lower osmolarity, than the cell cytoplasm. ) It also means that the extracellular fluid has a higher concentration of water in the solution than does the cell. In this situation, water will follow its concentration gradient and enter the cell. Hypertonic Solutions As for a hypertonic... Q: Which word describes how an extracellular solution can change the volume of a cell by affecting osmosis? Choices: - velocity - trichina - instability - tonicity A:
A: tonicity
Question: Answer the following question given this paragraph: A transverse wave is characterized by the high and low points reached by particles of the medium as the wave passes through. The high points are called crests, and the low points are called troughs. You can see both in the Figure below . Q: What are the high points in a transverse wave called? Choices: - apex - peaks - waves - crests A:
Answer: crests
*Question*
Answer the following question given this paragraph: Summary 20.1 Hydrocarbons Strong, stable bonds between carbon atoms produce complex molecules containing chains, branches, and rings. The chemistry of these compounds is called organic chemistry. Hydrocarbons are organic compounds composed of only carbon and hydrogen. The alkanes are saturated hydrocarbonsthat is, hydrocarbons that contain only single bonds. Alkenes contain one or more carbon-carbon double bonds. Alkynes contain one or more carbon-carbon triple bonds. Aromatic hydrocarbons contain ring structures with delocalized electron systems. Q: Strong, stable bonds between carbon atoms produce complex molecules containing chains, branches, and rings; the chemistry of these compounds is called what? Choices: - animal chemistry - inorganic chemistry - nuclear chemistry - organic chemistry A:
**Answer**
organic chemistry
Answer the following question given this paragraph: Magma composition determines both eruption type and volcano type. Q: What composition determines both eruption type and volcano type? Choices: - electrical - chemical - gas - magma A:
magma