Answer the following question given this paragraph: Hinge Joint. The knee joint is a hinge joint. Like a door hinge, a hinge joint allows backward and forward movement. Q: What type of joint is the knee joint? Choices: - ball joint - pivot joint - condyloid joint - hinge joint A:
hinge joint
Answer the following question given this paragraph: (a) Initially, the system (a copper penny and concentrated nitric acid) is at atmospheric pressure. (b) When the penny is added to the nitric acid, the volume of NO2 gas that is formed causes the piston to move upward to maintain the system at atmospheric pressure. In doing so, the system is performing work on its surroundings. The symbol E in represents the internal energy of a system, which is the sum of the kinetic energy and potential energy of all its components. It is the change in internal energy that produces heat plus work. To measure the energy changes that occur in chemical reactions, chemists usually use a related thermodynamic quantity calledenthalpy (H) (from the Greek enthalpein, meaning "to warm"). The enthalpy of a system is defined as the sum of its internal energy E plus the product of its pressure Pand volume V:. Q: To measure what changes that occur in chemical reactions, chemists usually use a related thermodynamic quantity, calledenthalpy? Choices: - ion exchange - evaporation - entropy - energy A:
energy
Q: Answer the following question given this paragraph: Gnathostomes: Jawed Fishes Gnathostomes or "jaw-mouths" are vertebrates that possess jaws. One of the most significant developments in early vertebrate evolution was the development of the jaw, which is a hinged structure attached to the cranium that allows an animal to grasp and tear its food. The evolution of jaws allowed early gnathostomes to exploit food resources that were unavailable to jawless fishes. Early gnathostomes also possessed two sets of paired fins, allowing the fishes to maneuver accurately. Pectoral fins are typically located on the anterior body, and pelvic fins on the posterior. Evolution of the jaw and paired fins permitted gnathostomes to expand from the sedentary suspension feeding of jawless fishes to become mobile predators. The ability of gnathostomes to exploit new nutrient sources likely is one reason that they replaced most jawless fishes during the Devonian period. Two early groups of gnathostomes were the acanthodians and placoderms (Figure 29.10), which arose in the late Silurian period and are now extinct. Most modern fishes are gnathostomes that belong to the clades Chondrichthyes and Osteichthyes. Q: What is the hinged structure attached to the cranium that allows an animal to grasp and tear its food? Choices: - tooth - neck - throat - jaw A:
A: jaw
Question: Answer the following question given this paragraph: Photosynthesis occurs in two stages, called the light reactions and the Calvin cycle. Figure below sums up what happens in these two stages. Both stages are described below. Q: The calvin cycle and light reactions are the two stages of what process? Choices: - condensation - evaporation - cell growth - photosynthesis A:
Answer: photosynthesis
*Question*
Answer the following question given this paragraph: Soil scientists measure the percentage of sand, silt, and clay in soil. They plot this information on a triangular diagram, with each type of particle at one corner ( Figure below ). Q: What kind of scientists measure percentages of sand, silt, and clay? Choices: - texture scientists - amount scientists - petro scientists - soil scientists A:
**Answer**
soil scientists
(Question)
Answer the following question given this paragraph: Sponges are a source of food for many species of fish. Because sponges are anchored to a reef or rock, they can't run away from predators. However, their sharp spicules provide some defense. They also produce toxins that may poison predators that try to eat them. Q: Where are sponges most likely anchored to? Choices: - sea floor - sand - beaches - reef or rock A:
(Answer)
reef or rock