Answer the following question given this paragraph: The endocrine system consists of glands that secrete hormones into the bloodstream. It is regulated by a part of the brain called the hypothalamus, which also secretes hormones. The hypothalamus controls the pituitary gland, which is called the "master gland" of the endocrine system because its hormones regulate other endocrine glands. Other endocrine glands include the thyroid gland and pancreas. Q: What specific part of the brain regulates the endocrine system? Choices: - parietal lobe - hippocampus - frontal lobe - hypothalamus A:
hypothalamus
Answer the following question given this paragraph: The diffusion of water across a membrane because of a difference in concentration is called osmosis . Let's explore three different situations and analyze the flow of water. Q: The diffusion of water across a membrane because of a difference in concentration is called? Choices: - absorption - hemostasis - diffusion - osmosis A:
osmosis
Q: Answer the following question given this paragraph: 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. Q: Neon, krypton and argon are examples of what kind of gases, which produce light by electroluminescence? Choices: - radiation gases - ionic gases - irradiation gases - halogen gases A:
A: halogen gases
Question: Answer the following question given this paragraph: Q: Newly formed what aggregates into threads that form the framework of the clot? Choices: - blood - collagen - plasma - fibrin A:
Answer: fibrin
*Question*
Answer the following question given this paragraph: At some time in the past, a variation probably came from a mutation. A mutation is a random change in an organism's genes ( Figure below ). Mutations are natural. Some are harmful, but many are neutral. If a mutation is harmful, the organism may not live to reproduce. If the mutation is beneficial, that organism may have a better chance to survive. An organism that survives is likely to have offspring. If it does, it may pass the mutation on to its offspring. The offspring may be more likely to survive. Q: What is a random change in an organism's genes? Choices: - meiosis - infection - accumulation - mutation A:
**Answer**
mutation
(Q).
Answer the following question given this paragraph: Water is recycled constantly through the ecosystem. That means any water you drank today has been around for millions of years. You could be drinking water that was once drunk by George Washington, the first humans, or even the dinosaurs. Q: Water is recycled constantly through which system? Choices: - the hydropshere - the habitat - the troposphere - the ecosystem A:
(A).
the ecosystem