Answer the following question given this paragraph: Figure 41.2 Cells placed in a hypertonic environment tend to shrink due to loss of water. In a hypotonic environment, cells tend to swell due to intake of water. The blood maintains an isotonic environment so that cells neither shrink nor swell. (credit: Mariana Ruiz Villareal). Q: An environment in which cells neither sink nor swell is known as what? Choices: - pressured environment - electrolyte environment - exothermic environment - isotonic environment A:
isotonic environment
Answer the following question given this paragraph: In chemosynthesis, organisms break down chemicals to make food energy. Q: What is the process by which organisms break down chemicals to make food energy? Choices: - excretion - gametogenesis - electrolysis - chemosynthesis A:
chemosynthesis
Q: Answer the following question given this paragraph: Surface tension comes from the fact that particles at the surface of a liquid do not experience interactions from all directions, leading to an imbalance of forces on the surface. Surface tension is responsible for several well-known behaviors of liquids, including water. Liquids with high surface tension tend to bead up when present in small amounts ( - ball-ch10_s03_f06). Surface. Q: Surface tension comes from the fact that particles at the surface of a liquid do not experience interactions from all directions which leads to what on the surface? Choices: - degradation of forces - floating particles - waves - imbalance of forces A:
A: imbalance of forces
Question: Answer the following question given this paragraph: Fossil fuels include coal, oil, and natural gas. Fossil fuels are the greatest energy source for modern society. Millions of years ago, plants used energy from the Sun to form carbon compounds. These compounds were later transformed into coal, oil, or natural gas. Fossil fuels take millions of years to form. For this reason, they are non-renewable. We will use most fossil fuels up in a matter of decades. Burning fossil fuels releases large amounts of pollution. The most important of these may be the greenhouse gas carbon dioxide. Q: What kind of fuels include coal, oil, and natural gas? Choices: - ancient - sediment - storage - fossil A:
Answer: fossil
*Question*
Answer the following question given this paragraph: Oxidation can be defined as the addition of oxygen to a molecule or the removal of hydrogen from a molecule. When an alkane is heated in the presence of an appropriate catalyst, it can be oxidized to the corresponding alkene in a reaction called a dehydrogenation reaction. Two hydrogen atoms are removed in the process. The alkene can be further oxidized to an alkyne by the removal of two more hydrogen atoms. Q: What is the addition of oxygen to a molecule or the removal of hydrogen from a molecule called? Choices: - precipitation - evaporation - ionization - oxidation A:
**Answer**
oxidation
(Q).
Answer the following question given this paragraph: Gases are composed of tiny particles that are separated by large distances. Gas particles are constantly moving, experiencing collisions with other gas particles and the walls of their container. The velocity of gas particles is related to the temperature of a gas. Gas particles do not experience any force of attraction or repulsion with each other. Q: What state of matter is characterized by tiny particles separated by large distances, which do not experience any force of attraction or repulsion with each other? Choices: - steam - emissions - liquids - gas A:
(A).
gas