Answer the following question given this paragraph: Sickle-Shaped and Normal Red Blood Cells. Sickle cell anemia is an autosomal recessive disorder. The mutation that causes the disorder affects just one amino acid in a single protein, but it has serious consequences for the affected person. This photo shows the sickle shape of red blood cells in people with sickle cell anemia. Q: Sickle cell anemia is what type of disorder? Choices: - autosomal dominant disorder - spontaneous mutation - nongenetic disorder - autosomal recessive disorder A:
autosomal recessive disorder
(Question)
Answer the following question given this paragraph: Now we move on to recycle. Sometimes it may be difficult to understand the differences between reusing and recycling. Recycling involves processing used materials in order to make them suitable for other uses. That usually means taking a used item, breaking it down, and reusing the pieces. Even though recycling requires extra energy, it does often make use of items which are broken, worn out, or cannot be reused. Q: What is the process of processing used material into new ones called? Choices: - remake - renew - reuse - recycling A:
(Answer)
recycling
Ques: Answer the following question given this paragraph: Every surface has microscopic bumps, lumps, and imperfections, emphasized as in the image above. If we try to slide the top block over the lower block, there will be numerous collisions as the bumps impact each other. The forward motion causes the collisions with bumps which then exert a force in opposite way the block is moving. The force of friction always opposes whatever motion is causing the friction. Q: What force is caused by microscopic bumps, lumps, and imperfections colliding? Choices: - gravitational - motion - tension - friction A:
Ans: friction
(Q).
Answer the following question given this paragraph: The thymus is located in the upper chest behind the breast bone. It stores and matures lymphocytes. Q: Which lymphoid organ is situated in the upper chest? Choices: - thyroid gland - spleen - pancreas - thymus A:
(A).
thymus
Ques:Answer the following question given this paragraph: An ionic crystal lattice breaks apart when it is dissolved in water. Dissociation is the separation of ions that occurs when a solid ionic compound dissolves. It is important to be able to write dissociation equations. Simply undo the crisscross method that you learned when writing chemical formulas of ionic compounds. The subscripts for the ions in the chemical formulas become the coefficients of the respective ions on the product side of the equation. Shown below are dissociation equations for NaCl, Ca(NO 3 ) 2 , and (NH 4 ) 3 PO 4 . Q: What do you call the separation of ions that occurs when a solid ionic compound dissolves? Choices: - deformation - decomposition - dissolution - dissociation A:

Ans:dissociation
Ques: Answer the following question given this paragraph: The main concern over the use of nuclear energy is the risk of radiation. Accidents at nuclear power plants can release harmful radiation that endangers people and other living things. Even without accidents, the used fuel that is left after nuclear fission reactions is still radioactive and very dangerous. It takes thousands of years for it to decay until it no longer releases harmful radiation. Therefore, used fuel must be stored securely to protect people and other living things. You can learn more about the problem of radioactive waste at this URL: http://www. youtube. com/watch?v=OPQ97LVRuuM. Q: What is the biggest risk associated with using nuclear energy? Choices: - explosion - mutation - fire - radiation A:
Ans:
radiation