Question 1
Potassium is receiving special attention as an important nutritional requirement. Potassium ions help conduct an electric charge that is important in the transmission of nerve impulses and muscle contraction. Foods such as bananas and dried apricots are rich in potassium. These foods are recommended for persons who lose potassium because their medication causes the loss of body water. Why might the heart malfunction because of loss of potassium?
Correct Answer:
Contraction of heart muscles requires potassium
Explanation:
Correct answer: Contraction of heart muscles requires potassium
Question 2
Oxides of carbon, sulfur, and nitrogen, which occur in the stack gases of coal-burning plants, react with atmospheric water to form acids. The pollution caused by stack gases may be responsible for all the following forms of environmental damage EXCEPT
Correct Answer:
sewage contamination of water supplies
Explanation:
Correct answer: sewage contamination of water supplies
Question 3
The laws that control recombination of genes seem to be much the same for all sexually reproducing organisms. These laws are studied by statistical analysis of large numbers of offspring for several generations. Which of the following organisms would be most useful in experiments to study the laws of recombination of genes?
Correct Answer:
mice
Explanation:
Correct answer: mice
Question 4
The early atmosphere of the Earth had no oxygen. It was first produced when bacteria developed the green pigment that made photosynthesis possible. In which of the following groups is the sequence in which organisms appeared on Earth presented correctly?
Correct Answer:
nongreen bacteria, green bacteria, animals
Explanation:
Correct answer: nongreen bacteria, green bacteria, animals
Question 5
The graph below shows the changes in the populations of wolves and moose in a northern forest for a period of 6 years. What is the most reasonable explanation of the facts shown?
Correct Answer:
Wolves produce more offspring when there are many moose.
Explanation:
Correct answer: Wolves produce more offspring when there are many moose.
Question 1
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Prepare with the GED Science Pre Test practice quiz. This question bank includes 36 questions covering plants, plant, disease, some, and cloning. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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GED Science Pre Test

This practice set contains 36 questions from the matching question bank and focuses on plants, plant, disease, some, and cloning. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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