Answer the following question given this paragraph: Q: What is the name of the portion of a nucleotide lacking phosphate groups? Choices: - nuclear shell - a nucleobase - nucleolus - a nucleoside A:
a nucleoside
(Question)
Answer the following question given this paragraph: Most biochemical molecules are macromolecules, meaning that they are very large. Some contain thousands of monomer molecules. Q: Most biochemical molecules are macromolecules, meaning that they are what? Choices: - very dense - very small - very abundant - very large A:
(Answer)
very large
Ques: Answer the following question given this paragraph: In the previous lesson, we discussed pure substances and mixtures. We indicated that the components of a mixture could be separated by physical means, but the components of a pure substance could not. Pure substances can only be broken down further through chemical means. In this lesson, we list several methods for separating mixtures. We will also be looking at chemical changes which alter the chemical identity of a substance, and how to recognize when a chemical change is taking place. Q: While components of a mixture can be separated by physical means, the components of a pure substance can only be broken down through what means? Choices: - mechanical - radiation - thermal - chemical A:
Ans: chemical
(Q).
Answer the following question given this paragraph: Soil and water are renewable resources but may be ruined by careless human actions. Soil can be depleted of nutrients. It can also be eroded by wind or water. Q: What substance can be eroded by wind or water? Choices: - metal - wood - sand - soil A:
(A).
soil
Ques:Answer the following question given this paragraph: Brain: Prosopagnosia The failures of sensory perception can be unusual and debilitating. A particular sensory deficit that inhibits an important social function of humans is prosopagnosia, or face blindness. The word comes from the Greek words prosopa, that means "faces," and agnosia, that means "not knowing. " Some people may feel that they cannot recognize people easily by their faces. However, a person with prosopagnosia cannot recognize the most recognizable people in their respective cultures. They would not recognize the face of a celebrity, an important historical figure, or even a family member like their mother. They may not even recognize their own face. Prosopagnosia can be caused by trauma to the brain, or it can be present from birth. The exact cause of proposagnosia and the reason that it happens to some people is unclear. A study of the brains of people born with the deficit found that a specific region of the brain, the anterior fusiform gyrus of the temporal lobe, is often underdeveloped. This region of the brain is concerned with the recognition of visual stimuli and its possible association with memories. Though the evidence is not yet definitive, this region is likely to be where facial recognition occurs. Though this can be a devastating condition, people who suffer from it can get byoften by using other cues to recognize the people they see. Often, the sound of a person's voice, or the presence of unique cues such as distinct facial features (a mole, for example) or hair color can help the sufferer recognize a familiar person. In the video on prosopagnosia provided in this section, a woman is shown having trouble recognizing celebrities, family members, and herself. In some situations, she can use other cues to help her recognize faces. Q: What is prosopagnosia? Choices: - way blindness - lack of memory - time blindness - face blindness A:

Ans:face blindness
Ques:Answer the following question given this paragraph: Salmon Larva. This newly hatched salmon larva doesn't look very fish-like. The structure hanging from the larva is the yolk sac. Q: What is the structure which hangs from a newly hatched salmon larva? Choices: - air sac - liquid sac - stomach sac - yolk sac A:

Ans:
yolk sac