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GED-Science Latest Exam (Sep 2017)

[Free] 2017(Sep) EnsurePass Testking GED GED-Science Dumps with VCE and PDF 161-170

September 26, 2017

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2017 Sep GED Official New Released GED-Science
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GED Science Exam

Question No: 161

– Exhibit –

The most realistic description of energy flow through an ecosystem is a food web that represents an interconnected series of food chains. In general, the greater the number of alternative channels through which energy can flow, the greater the stability of the food web and the ecosystem.

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The diagram shows a typical food web for a wet meadow. The hawk and the fox obtain nourishment by preying upon rabbits, frogs, snakes, and mice. The fox may even eat grasshoppers. If, for example, the rabbit population is reduced, possibly because of bad weather during the breeding season, the fox and hawk would shift their predatory pressure to other forms of prey. The rabbit population would then have a chance to bounce back and the ecosystem would remain stable.

– Exhibit –

In the food web diagram shown, which organisms directly consume the grasshoppers?

  1. hawks, foxes, and snakes

  2. frogs, foxes, and snakes

  3. rabbits, foxes, and snakes

  4. mice, foxes, and hawks

  5. frogs, snakes, and hawks

Answer: B

Question No: 162

– Exhibit –

The most realistic description of energy flow through an ecosystem is a food web that represents an interconnected series of food chains. In general, the greater the number of alternative channels through which energy can flow, the greater the stability of the food web and the ecosystem.

Ensurepass 2017 PDF and VCE

The diagram shows a typical food web for a wet meadow. The hawk and the fox obtain nourishment by preying upon rabbits, frogs, snakes, and mice. The fox may even eat grasshoppers. If, for example, the rabbit population is reduced, possibly because of bad weatherduring the breeding season, the fox and hawk would shift their predatory pressure to other forms of prey. The rabbit population would then have a chance to bounce back and the ecosystem would remain stable.

– Exhibit –

Rabbits are destroying a farmer’s vegetable garden. Based on the food web, if the farmer

removes the rabbits, which other organisms might be directly affected?

  1. foxes and snakes

  2. hawks and snakes

  3. grasshoppers and mice

  4. foxes and hawks

  5. grasshoppers and grass

Answer: D

Question No: 163

– Exhibit –

The most realistic description of energy flow through an ecosystem is a food web that represents an interconnected series of food chains. In general, the greater the number of alternative channels through which energy can flow, the greater the stability of the food web and the ecosystem.

Ensurepass 2017 PDF and VCE

The diagram shows a typical food web for a wet meadow. The hawk and the fox obtain nourishment by preying upon rabbits, frogs, snakes, and mice. The fox may even eat grasshoppers. If, for example, the rabbit population is reduced, possibly because of bad weather during the breeding season, the fox and hawk would shift their predatory pressure to other forms of prey. The rabbit population would then have a chance to bounce back and the ecosystem would remain stable.

– Exhibit –

Based on the diagram, which consumer would have the greatest chance of surviving if the amount of available prey changes during the different seasons?

  1. hawks

  2. foxes

  3. snakes

  4. mice

  5. rabbits

Answer: B

Question No: 164

The movements of different freshwater fish were tracked as they swam in waters of varying temperatures. Assuming that “normal” aquarium water temperature is 25掳 C, the effects of water temperature on movements were found within a temperature range from 18掳 C to 28掳 C.

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What statement is the best conclusion that can be made based on the information collected in this experiment?

  1. The best water temperature for swimming is 10掳 C.

  2. If the water is too cold, the fish will not die.

  3. If the water is too warm, the fish can not swim.

  4. A change in water temperature affects fish movement.

  5. The dissolved oxygen in the water does not affect the fish movements.

Answer: D

Question No: 165

Exhibit:

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Based on this article, which statement is true for any defective gene a person carries?

  1. A physical examination will reveal it.

  2. All defective genes are eliminated before birth.

  3. The person will never be able to have children.

  4. The person may be unaware of this defect until he or she has children.

  5. The person’s children will have a 100 percent chance of receiving that same gene.

Answer: D

Question No: 166

Exhibit:

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According to the article, about 5 percent of all children born have genes containing which component?

  1. harmful viruses that produce disease

  2. information that came from one parent only

  3. no genetic information

  4. information for red hair

  5. errors that have produced abnormalities

Answer: E

Question No: 167

Scientists’ studies have revealed that health is tied very closely to diet. Health organizations estimate that more than one-third of all cancer is caused by food and drink. The health of the heart and circulatory system is linked to these factors and to the amount of cholesterol in the bloodstream.

Cholesterol is a fatty, waxy substance. Although a certain amount is required for good health, excessive amounts of cholesterol cause arteries to clog.

Which meal and beverage is best for a person who is trying to reduce his or her cholesterol level?

  1. cheese sticks, pears, salad, milk

  2. hamburger, french fries, cola

  3. pinto beans, plain baked potato, apples, tea

  4. steak, green beans, rice, coffee

  5. pepperoni pizza, salad, fruit cocktail, cola

Answer: C

Question No: 168

Exhibit:

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Based on the graph at the left, which statement is FALSE?

  1. Asia has more coal than any other continent.

  2. North America has over 4000 billion tons of coal.

  3. Asia has more coal than the other continents combined.

  4. Only one continent has over 10,000 billion tons of coal.

  5. Africa has more coal reserves than Europe.

Answer: E

Question No: 169

Scientist Alexander Fleming was looking for a chemical that would be effective in combating bacteria. In order to test various chemicals, he grew cultures of the bacteria, Staphylococcus. One day in 1928, as he was working in his laboratory, Fleming noticed that one of his culture plates had mold growing on it. Many people might have thrown the plate away thinking that it was useless, but Fleming did not. He noticed something-that no bacteria were growing near the mold. He hypothesized that the mold was killing the bacteria. Fleming had just discovered penicillin.

He began working to separate the chemical that killed the bacteria from all the other chemicals in the mold. Unfortunately, he was unable to do so. However, in 1940, two chemists, Ernst Chain and Howard Florey, did manage to separate the chemical penicillin. In 1945, all three men were awarded the Nobel Prize in Medicine.

Based on the information, which statement represents the best conclusion?

  1. Fleming developed penicillin as an antibiotic.

  2. Fleming did not deserve his award as much as Chain and Florey.

  3. A discovery is sometimes an unexpected, accidental observation.

  4. In science, all conclusions come from carefully prepared experiments.

  5. Penicillin limits mold growth.

Answer: C

Question No: 170

Making products from recycled materials, such as aluminum cans, glass, and plastic usually saves energy and other resources. For example, it takes about 75% less energy to

make steel from scrap than from ore. All forms of recycling involve some energy to produce the recycled materials, a process that also results in the production of some pollution.

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The chart at the left shows the energy savings from recycling.

When Anil is at the grocery store, he can choose to buy juice in a glass bottle, an aluminum can, a plastic jug, a juice box (paper), or foil-covered juice container.

If Anil’s community requires that he recycles, which container would provide the MOST overall energy savings?

  1. aluminum can

  2. plastic jug

  3. waxy, cardboard juice box

  4. glass bottle

  5. foil-covered container

Answer: A

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