GED GED Science GED Science Exam Online Training
GED GED Science Online Training
The questions for GED Science were last updated at Feb 08,2025.
- Exam Code: GED Science
- Exam Name: GED Science Exam
- Certification Provider: GED
- Latest update: Feb 08,2025
Exhibit:
Based on the information and diagram, which antibiotic would be most effective to use in treating the patient?
- A . the antibiotic in section D
- B . the antibiotic in section A
- C . the antibiotic in section B
- D . the antibiotic in section C
- E . The antibiotics in sections A and C are equally effective.
In order to remain healthy, the human body requires a certain level of vitamin D, which is synthesized in the body. Intestinal enzymes and sunlight convert cholesterol to vitamin D. People who do not spend much time in the sun can acquire vitamin D from the food they eat or from vitamin supplements.
Which person would benefit the most from ingesting a moderate amount of vitamin D in supplements or in the types of food eaten?
- A . coal miner who works underground
- B . mail delivery person
- C . marathon runner
- D . policeman who directs morning street traffic
- E . food vendor at a day soccer game
Wheat is the staple cereal for most of the world. Flour is made from the kernel of the wheat plant. The kernels are first separated from the plant stem and then broken apart by the milling process. The husk, the outer layer unusable for most purposes, is removed.
The wheat kernel (whole grain) has three main parts: germ, bran, and endosperm. The germ is especially rich in vitamin E, niacin, and riboflavin. The bran, a protective coating around the kernel, is also a rich source of nutrients and fiber. The endosperm, making up 83% of the kernel, is the soft inside portion containing starch and proteins.
Although the enrichment of white flour restores some of the lost nutrients, there are some vitamins and minerals that are lost in the refining process and not replaced. A valuable source of fiber is also lost.
Ling reads an article that states that many people don’t get enough fiber in their daily diet.
Which type of bread would be the best to recommend to Ling?
- A . whole wheat bread
- B . unenriched white bread
- C . enriched white bread
- D . sourdough bread
- E . French bread
By taking careful measurements, scientists have determined that the universe is expanding over time. Individual components of the universe, such as galaxies, continue to travel through space. This concept is sometimes represented by a balloon as shown below. Each dot on the balloon represents a part of the universe, such as a galaxy.
Based on the information and diagram, which statement best describes the way galaxies move through space over time?
- A . northward
- B . westward
- C . northwest
- D . farther apart
- E . closer together
Air is a mixture of gases, mostly nitrogen and oxygen, but it also contains a small amount of water vapor. Depending on its temperature, water can exist in any of the three states of matter.
In the diagram at the left, water droplets have formed on the outside of the can, and the can contains pieces of ice.
Based on the information and diagram, which statement regarding the droplets on the outside of the can is the most accurate?
- A . The can leaked water from the ice cubes as they melted.
- B . The ice in the can cooled the air around the can, causing the water droplet formation.
- C . Liquid on the can is CO2 from the exhaled air of the observers of the demonstration.
- D . Many more droplets would have appeared if a styrofoam cup had been substituted for the tin can.
- E . Many more droplets will form on the outside of the can on a windy day, when the air is less humid.
Why is algin used in a chocolate milk shake?
- A . provides a dark chocolate color
- B . makes the milk shake thick and creamy
- C . enhances the chocolate flavor
- D . makes the milk shake cold
- E . forces the milk shake to melt
An electromagnet is a magnet that can be turned on and off. It consists of a central metal core, such as iron, and many wrappings of wire around the metal core. An electrical current sent through the wire wrappings causes the formation of a magnetic field. There are several ways to increase the strength of an electromagnet: increasing the number of wrappings, increasing the current of electricity, making the wrappings closer together, or increasing the diameter of the core.
Five electromagnets are shown above. The electrical power source for each electromagnet is an ordinary flashlight battery.
Which electromagnet will produce the strongest magnetic field?
- A . A
- B . B
- C . C
- D . D
- E . E
Soil is formed when the rock at Earth’s surface weathers. Normally, soil develops into three layers, called horizons. The illustration below shows the A, B, and C horizons of a typical soil profile.
Based on the diagram, if the surface vegetation were removed, which would be the likely effect on the soil?
- A . The top 1 or 2 unprotected layers might wash away.
- B . The C horizon would be further buried.
- C . The A horizon would enlarge.
- D . The order of the horizons would be reversed.
- E . The B horizon would disappear entirely.
Scientists often place living organisms into related groups for the purpose of studying their physical characteristics. The diagram below shows five single-celled organisms.
Based on the above information and diagram, using the similarities of physical traits, which pair of organisms might be grouped for scientific study?
- A . A and D
- B . B and C
- C . B and E
- D . C and D
- E . C and E
When a cell, such as a red blood cell, is placed in pure distilled water, water will move into the cell, causing it to expand and burst. However, most plant cells, which are surrounded by a tough cellulose wall, will not burst when placed in pure distilled water.
This information indicates which of the following statements about cells?
- A . A plant cell cannot survive in pure distilled water.
- B . Water can dissolve a cellulose wall.
- C . A cellulose wall can resist the expansion of the cell.
- D . A cellulose wall is sometimes found around an animal cell.
- E . A plant cell absorbs more water than an animal cell.
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