Answer the following question given this paragraph: Q: Each enzyme has an optimal what at which its reaction rate is greatest? Choices: - weight - size - precipitation - temperature A:
temperature
(Question)
Answer the following question given this paragraph: The name of this molecule is 2-methylpropane. The molecular formula is still C 4 H 10 , which is the same formula as butane. A structural isomer is one of multiple molecules that have the same molecular formula, but different structural formulas. Butane and 2-methylpropane are structural isomers. Q: The molecular formula is still c 4 h 10 , which is the same formula as? Choices: - chlorine - carbon hydroxide - propane - butane A:
(Answer)
butane
Ques: Answer the following question given this paragraph: Oceanography is the study of the oceans. The word oceanology might be more accurate, since "ology" is "the study of. " "Graph" is "to write" and refers to mapmaking. But mapping the oceans is how oceanography started. Q: What is oceanography the study of? Choices: - bodies of water - seas - waters - oceans A:
Ans: oceans
(Q).
Answer the following question given this paragraph: Q: What is reduced and forms part of the gelatinous disks sandwiched between the vertebrae in humans? Choices: - the clavicle - the sacrum - the pelvis - the notochord A:
(A).
the notochord
Ques:Answer the following question given this paragraph: Blood flows through the heart in two separate loops, which are indicated by the arrows in Figure above. You can think of them as a "left side loop" and a "right side loop. " The right side of the heart collects oxygen-poor blood from the body and pumps the blood to the lungs. In the lungs, carbon dioxide is released and oxygen obtained by the blood. The left side of the heart carries the oxygen-rich blood back from the lungs and pumps it to the rest of the body. The blood delivers oxygen to the body's cells, returning the oxygen-poor blood back to the heart. Q: What type of blood does the right side of the heart collect and then pump to the lungs? Choices: - nitrogen-rich blood - oxygen-rich blood - nitrogen-poor blood - oxygen-poor blood A:

Ans:oxygen-poor blood
Answer the following question given this paragraph: Radiation can be absorbed or shielded by materials, such as the lead aprons dentists drape on us when taking x rays. Lead is a particularly effective shield compared with other materials, such as plastic or air. How does the range of radiation depend on material? Ionizing radiation interacts best with charged particles in a material. Since electrons have small masses, they most readily absorb the energy of the radiation in collisions. The greater the density of a material and, in particular, the greater the density of electrons within a material, the smaller the range of radiation. Collisions Conservation of energy and momentum often results in energy transfer to a less massive object in a collision. This was discussed in detail in Work, Energy, and Energy Resources, for example. Different types of radiation have different ranges when compared at the same energy and in the same material. Alphas have the shortest range, betas penetrate farther, and gammas have the greatest range. This is directly related to charge and speed of the particle or type of radiation. At a given energy, each , , or will produce the same number of ionizations in a material (each ionization requires a certain amount of energy on average). The more readily the particle produces ionization, the more quickly it will lose its energy. The effect of charge is as follows: The has a charge of +2q e , the has a charge of q e , and the . Q: Radiation can be absorbed or shielded by materials, particularly what material used to make protective aprons worn by x-ray administrators? Choices: - cotton - steel - carbon - lead A:
lead