Answer the following question given this paragraph: The amount of reactants and products do not have to be equal. However, after equilibrium is attained, the amounts of reactants and products will be constant. Q: In a chemical reaction, the amounts of reactants and products will be constant when what state is attained? A:

OPTIONS:
- saturation
- peak
- homogeneity
- equilibrium

Answer: equilibrium

Answer the following question given this paragraph: 4.4 Muscle Tissue and Motion The three types of muscle cells are skeletal, cardiac, and smooth. Their morphologies match their specific functions in the body. Skeletal muscle is voluntary and responds to conscious stimuli. The cells are striated and multinucleated appearing as long, unbranched cylinders. Cardiac muscle is involuntary and found only in the heart. Each cell is striated with a single nucleus and they attach to one another to form long fibers. Cells are attached to one another at intercalated disks. The cells are interconnected physically and electrochemically to act as a syncytium. Cardiac muscle cells contract autonomously and involuntarily. Smooth muscle is involuntary. Each cell is a spindle-shaped fiber and contains a single nucleus. No striations are evident because the actin and myosin filaments do not align in the cytoplasm. Q: Skeletal, cardiac, and smooth are the three types of what cells and possess morphologies correlated with their functions? A:

OPTIONS:
- cartilage tissue
- organ
- bone
- muscle

Answer: muscle

Answer the following question given this paragraph: As the rust forms on the surface of the iron, it flakes off to expose more iron, which will continue to rust. Rust is clearly a substance that is different from iron. Rusting is an example of a chemical change. Some chemical changes are not as obvious but are still hugely important. For example, photosynthesis and cellular respiration are chemical changes that we could not live without. Chemical changes involve the combination, decomposition, or rearrangement of elements and compounds to form new substances. Q: The combination decomposition or rearrangement of elements and compounds to form new substances is known as? A:

OPTIONS:
- ionic changes
- carbon changes
- mineral changes
- chemical changes

Answer: chemical changes

Answer the following question given this paragraph: The third conservation law is conservation of angular momentum. This vector quantity is the product of rotational velocity and rotational inertia. In any closed system (including the universe) the quantity of angular momentum is fixed. Angular momentum can be transferred from one body to another, but cannot be lost or gained. If a system has its angular momentum changed from the outside it is caused by a torque. Torque is a force applied at a distance from the center of rotation. Q: Which of newton's laws states that the quantity of angular momentum in a closed system is fixed? A:

OPTIONS:
- fourth conservation law
- sixth conservation law
- second conservation law
- third conservation law

Answer:
third conservation law