Answer the following question given this paragraph: Bones look tough, shiny, and white because they are covered by a layer called the periosteum . Many bones also contain a soft connective tissue called bone marrow in the pores of the spongy bone. Bone marrow is where blood cells are made. Q: What layer covers the bones that make them look tough, shiny, and white? Choices: - epithelium - cuticle - epidermis - periosteum A:
periosteum
(Question)
Answer the following question given this paragraph: Negative electrons are attracted to the positive nucleus. This force of attraction keeps electrons constantly moving around the nucleus. The region where an electron is most likely to be found is called an orbital. Q: What is the region called where an electron is most likely to be found? Choices: - the shell - the nucleus - the ellipse - the orbital A:
(Answer)
the orbital
Ques: Answer the following question given this paragraph: The magnitude of the wave function at a particular point in space is proportional to the amplitude of the wave at that point. Many wave functions are complex functions, which is a mathematical term indicating that they contain. Q: The magnitude of the wave function at a particular point in space is proportional to what property of the wave at that point? Choices: - voltage - frequency - Sounding - amplitude A:
Ans: amplitude
(Q).
Answer the following question given this paragraph: Some invertebrates can also reproduce asexually. This may occur by fission or budding. Fission takes place when an animal simply divides into two parts. Each part then regrows the missing part. The result is two whole organisms. Budding may take place when a parent forms a small bump, or bud. The bud remains attached to the parent while it develops into a new individual. Q: What type of reproduction takes place when an animal simply divides into two parts? Choices: - budding - sexual reproduction - fusion - fission A:
(A).
fission
Ques: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:

Ans:lower it
Ques: Answer the following question given this paragraph: Electrical circuits are often modeled by using water in a river. The potential energy of the water is the highest at the source of the river and decreases as the water flows down the river toward the end. When the water reaches the ocean, its potential energy has become zero. The circuit shown below has a similar situation. The current in this circuit is drawn in the direction of the electron flow. It starts at the battery on the left, where electrons leave the negative terminal and travel around the circuit. Since all of the current travels across each resistor, these resistors are said to be in series . A series circuit is one in which all of the current must pass through every resistor in the circuit. Returning to the water analogy, there is only one riverbed from the top of the mountain to the ocean. Q: Where is the potential energy of a river the highest at? Choices: - the middle - the ocean - the bank - the source A:
Ans:
the source