Q: The kidneys help control acid-base balance by excreting _____ and generating bicarbonate that helps maintain blood plasma ph within a normal range? Read this paragraph and choose the correct option from the provided answers: Buffer Systems in the Body The buffer systems in the human body are extremely efficient, and different systems work at different rates. It takes only seconds for the chemical buffers in the blood to make adjustments to pH. The respiratory tract can adjust the blood pH upward in minutes by exhaling CO2 from the body. The renal system can also adjust blood pH through the excretion of hydrogen ions (H+) and the conservation of bicarbonate, but this process takes hours to days to have an effect. The buffer systems functioning in blood plasma include plasma proteins, phosphate, and bicarbonate and carbonic acid buffers. The kidneys help control acid-base balance by excreting hydrogen ions and generating bicarbonate that helps maintain blood plasma pH within a normal range. Protein buffer systems work predominantly inside cells. Choices: - magnesium ions - sodium ions - lithium ions - hydrogen ions A:
hydrogen ions

Q: Neon, krypton and argon are examples of what kind of gases, which produce light by electroluminescence? Read this paragraph and choose the correct option from the provided answers: A neon light produces visible light by electroluminescence. In this process, neon or some other gas gives off light when an electric current passes through it. Other halogen gases besides neonincluding krypton and argonalso produce light in this way. The word "OPEN" in the sign below is a neon light. It is a long glass tube that contains neon gas. When electricity passes through the gas, it excites electrons of neon atoms, and the electrons jump to a higher energy level. As the excited electrons return to their original energy level, they give off visible light. Neon produces red light. Other gases produce light of different colors. For example, krypton produces violet light, and argon produces blue light. Choices: - radiation gases - ionic gases - irradiation gases - halogen gases A:
halogen gases

Q: What is the study of how living things interact with each other and with their environment? Read this paragraph and choose the correct option from the provided answers: Ecology is the study of how living things interact with each other and with their environment. Choices: - scientology - biology - geology - ecology A:
ecology