Answer the following question given this paragraph: The atria receive the blood, and the ventricles pump the blood out of the heart. Each of the four chambers of the heart has a specific job. Q: How many chambers are in the heart? Choices: - two - eight - five - four A:
four
Answer the following question given this paragraph: Erosion and deposition are responsible for many landforms. Erosion is the transport of sediments. Agents of erosion include flowing water, waves, wind, ice, or gravity. Eroded material is eventually dropped somewhere else. This is called deposition . Q: The process where eroded material is dropped somewhere is called? Choices: - maturation - diffusion - diffusion - deposition A:
deposition
Q: Answer the following question given this paragraph: As you can see from Figure above , a mitochondrion has an inner and outer membrane. The space between the inner and outer membrane is called the intermembrane space. The space enclosed by the inner membrane is called the matrix. The second stage of cellular respiration, the Krebs cycle, takes place in the matrix. The third stage, electron transport, takes place on the inner membrane. Q: What do mitochondrions have an inner and outer version of? Choices: - protein - Molecule - Fatty Acids - membrane A:
A: membrane
Question: Answer the following question given this paragraph: Endoskeleton An endoskeleton is a skeleton that consists of hard, mineralized structures located within the soft tissue of organisms. An example of a primitive endoskeletal structure is the spicules of sponges. The bones of vertebrates are composed of tissues, whereas sponges have no true tissues (Figure 38.4). Endoskeletons provide support for the body, protect internal organs, and allow for movement through contraction of muscles attached to the skeleton. Q: A skeleton that consists of hard, mineralized structures located within the soft tissue of organisms is called what? Choices: - exoskeleton - calcium deposits - hydrostatic skeleton - endoskeleton A:
Answer: endoskeleton
*Question*
Answer the following question given this paragraph: Summary 16.1 Spontaneity Chemical and physical processes have a natural tendency to occur in one direction under certain conditions. A spontaneous process occurs without the need for a continual input of energy from some external source, while a nonspontaneous process requires such. Systems undergoing a spontaneous process may or may not experience a gain or loss of energy, but they will experience a change in the way matter and/or energy is distributed within the system. 16.2 Entropy Entropy (S) is a state function that can be related to the number of microstates for a system (the number of ways the system can be arranged) and to the ratio of reversible heat to kelvin temperature. It may be interpreted as a measure of the dispersal or distribution of matter and/or energy in a system, and it is often described as representing the "disorder" of the system. For a given substance, Ssolid < Sliquid < Sgas in a given physical state at a given temperature, entropy is typically greater for heavier atoms or more complex molecules. Entropy increases when a system is heated and when solutions form. Using these guidelines, the sign of entropy changes for some chemical reactions may be reliably predicted. 16.3 The Second and Third Laws of Thermodynamics The second law of thermodynamics states that a spontaneous process increases the entropy of the universe, Suniv > 0. If Suniv < 0, the process is nonspontaneous, and if Suniv = 0, the system is at equilibrium. The third law of thermodynamics establishes the zero for entropy as that of a perfect, pure crystalline solid at 0 K. With only one possible microstate, the entropy is zero. We may compute the standard entropy change for a process by using standard entropy values for the reactants and products involved in the process. 16.4 Free Energy Gibbs free energy (G) is a state function defined with regard to system quantities only and may be used to predict the spontaneity of a process. A negative value for G indicates a spontaneous process; a positive G indicates a... Q: What kind of process occurs without the need for a continual input of energy from some external source? Choices: - Decay Process - Different Process - induced process - spontaneous process A:
**Answer**
spontaneous process
*Question*
Answer the following question given this paragraph: The atomic number defines the identity of an element. Q: The atomic number defines the identity of what? Choices: - atomic reaction - neutralized molecule - periodic table - element A:
**Answer**
element