Free GED SCIENCE Exam Braindumps
GED Section 3: Science Questions 121–125 (page: 26)

Updated On: 9-Feb-2026

What is leaf A?

  1. Cara ovata
  2. Fagus grandifolia
  3. Zea mays
  4. Taxus canadensis
  5. Cornus florida

Answer(s): B



What group of organisms would thrive as a result of land masses increasing and sea levels receding?

  1. sponge
  2. trilobite
  3. flowering plant
  4. starfish
  5. tuna

Answer(s): C



A cleaning agent contains ingredients listed in the figure below.
Exhibit:


Which ingredient(s) would be the LEAST important in determining how well the cleaner can clean windows?

  1. ammonium hydroxide solution
  2. borax
  3. ammonium hydroxide and color
  4. borax and perfume
  5. perfume and color

Answer(s): E



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?

  1. A and D
  2. B and C
  3. B and E
  4. C and D
  5. C and E

Answer(s): E



Scientists are unraveling the mystery of how early life-forms were first able to duplicate themselves. Today, it is known that reproduction and growth requires both DNA and proteins. DNA holds the crucial genetic instructions for assembling amino acids into proteins. Proteins are key molecules that make up the structure of future generations. Precisely, how does this process occur? RNA seems to hold the key to an answer.
Which statement provides the best summation about the duplication of life-forms presented above?

  1. Investigating questions of origin is an artist's function, not that of a scientist.
  2. Questions of origin are best resolved legislatively, by a vote among scientists.
  3. RNA may be involved in linking protein synthesis with DNA.
  4. DNA is a small, very simple molecule.
  5. Research studies should concentrate on copying protein molecules to form other protein molecules.

Answer(s): C



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