Answer the following question given this paragraph: Q: Archaeal cell walls contain a variety of polysaccharides and proteins but lack what? Choices: - RNA - DNA - S-layers - peptidoglycan A:
peptidoglycan
Answer the following question given this paragraph: Q: Integral proteins penetrate the hydrophobic interior of the what? Choices: - metabolism bilayer - skin bilayer - carbon bilayer - lipid bilayer A:
lipid bilayer
Q: Answer the following question given this paragraph: Q: During metamorphosis, most salamander species go through what aquatic stage on the way to becoming adults? Choices: - prophase - metaphase - anaphase - larval stage A:
A: larval stage
Question: Answer the following question given this paragraph: Birds live and breed in most terrestrial habitats on all seven continents. They occupy a wide range of ecological positions. Q: How many continents do birds breed on? Choices: - 4 - 2 - 3 - 7 A:
Answer: 7
*Question*
Answer the following question given this paragraph: Chemical reactions follow the laws of thermodynamics. The First Law of Thermodynamics states that energy can be changed from one form to another, but it cannot be created or destroyed. This law is also known as the Law of Conservation of Energy. The Second Law of Thermodynamics states the energy available after a chemical reaction is always less than that at the beginning of a reaction. This is also commonly referred to as entropy. Entropy can be described as the degree of disorder in a system . That is, as energy is transferred from one form to another, some of the energy is lost as heat, and the amount of available energy decreases. As the energy decreases, the disorder in the system increases, and, by definition, the entropy increases. Ice melting provides an example in which entropy increases. Entropy essentially is a measure of the tendency of a process, such as a chemical reaction, to proceed in a particular direction. Q: Chemical reactions follow which laws? Choices: - Physics Analysis - Chemical kinetics - Archie's law - thermodynamics A:
**Answer**
thermodynamics
Q: Answer the following question given this paragraph: You already know that a sour taste is one property of acids. ( Warning : Never taste an unknown substance to see whether it is an acid!) Acids have certain other properties as well. For example, acids can conduct electricity when dissolved in water because they consist of charged particles in solution. (Electric current is a flow of charged particles. ) Acids can also react with metals, and when they do they produce hydrogen gas. An example of this type of reaction is hydrochloric acid reacting with the metal zinc (Zn). The reaction is pictured in the Figure below . It can be represented by the chemical equation:. Q: Acids can also react with metals, and when they do they produce what? Choices: - alloys - potassium gas - rust - hydrogen gas A:
A: hydrogen gas