Answer the following question given this paragraph: Blood from the body enters the right atrium of the heart. The right atrium pumps the blood to the right ventricle, which pumps it to the lungs. Q: Which area of the human heart pumps the blood to the right ventricle? Choices: - left atrium - true atrium - left ventricle - right atrium A:
right atrium
Answer the following question given this paragraph: of the proximal tibia. This versatile muscle flexes the leg at the knee and flexes, abducts, and laterally rotates the leg at the hip. This muscle allows us to sit cross-legged. The posterior compartment of the thigh includes muscles that flex the leg and extend the thigh. The three long muscles on the back of the knee are the hamstring group, which flexes the knee. These are the biceps femoris, semitendinosus, and semimembranosus. The tendons of these muscles form the popliteal fossa, the diamond-shaped space at the back of the knee. Q: The three long muscles on the back of the knee are part of which group? Choices: - synovial joint - patella - adductors - hamstring group A:
hamstring group
Q: Answer the following question given this paragraph: Diffusion is the movement of molecules from an area of high concentration to an area of low concentration. Q: What is the term for the movement of molecules from an area of high concentration to an area of low concentration? Choices: - concentration - Osmosis - passive transport - diffusion A:
A: diffusion
Question: Answer the following question given this paragraph: Q: What facilitates the diffusion of ions across a membrane? Choices: - photon channels - ionic bonds - passive transport - ion channels A:
Answer: ion channels
*Question*
Answer the following question given this paragraph: We all enjoy a cool dip in a swimming pool on a hot day, but we may not realize the work needed to keep that water safe and healthy. The ideal pH for a swimming pool is around 7.2. The pH will change as a result of many factors. Adjustment can be accomplished with different chemicals depending on the tested pH. High pH can be lowered with liquid HCl (unsafe material) or sodium bisulfate. The bisulfate anion is a weak acid and can dissociate partially in solution. To increase pH, use sodium carbonate. The carbonate anion forms an equilibrium with protons that results in some formation of carbon dioxide. Q: Liquid hcl can be used to do what to the ph of a swimming pool? Choices: - increase it - raise it - heighten it - lower it A:
**Answer**
lower it
Q: Answer the following question given this paragraph: Q: What do we call heated groundwater that erupts from the ground under pressure? Choices: - aquifers - spas - volcanic eruptions - springs or geysers A:
A: springs or geysers