Science Test Set 4

Learn how to pass the GED® test by answering these Science practice questions.

Each question has several answer choices.

Choose the best answer for each question.

1. What is the body's first line of defense against infection by foreign organisms?

Question 1 of 10

2. A producer uses energy from the Sun to make food. Which of these is NOT a producer?

Question 2 of 10


You purchase a new pot that includes both stainless steel and aluminum. Chef John says the aluminum was added to fortify the soft consistency of the stainless steel. Chef Peter says the aluminum was added to improve heat conduction. Who is correct?

Question 3 of 10

4. What is produced during photosynthesis?

Question 4 of 10

5. According to fossil records, the horses that lived 50 million years ago were much smaller, weaker and slower than modern horses. Which process is most likely responsible for the changes that have led to the increased size, strength, and speed in horses?

Question 5 of 10

6. After the initial infection, B-cells recognize the measles virus. How is this helpful in the human immune response?

Question 6 of 10

7. What is the term for a strong response to a harmless antigen in the environment?

Question 7 of 10

8. Which of the following describes a way that a person's health can be affected by heredity?

Question 8 of 10

9. Hitchhiker's thumb (H) is dominant to no hitchhiker's thumb (h). A woman who does not have a hitchhiker's thumb marries a man who is heterozygous for a hitchhiker's thumb.
What is the probable genotypic ratio of their children?

Question 9 of 10

10. Which of the following is a limiting factor in a population of organisms?

Question 10 of 10


GED Test Prep Tips

Taking practice tests is very important because they indicate what your knowledge gaps are. Studies have indicated that students who take repeated practice tests attain higher scores on the real test.

It’s important that you know what your weak points are so you can focus on learning these topics.

Recent graduates have some good advice for you: don’t try to learn for all subject tests at once.

You are allowed to take one of the subject tests at a time, so prepare for one subject area, take that test, and move on to the next subject field.

When preparing for the test, the most common slipup is forgetting to block some time for learning.

Postponement and pretexts are your biggest enemies. Please adopt a learning schedule and stick to it.

The second common mistake that leads to failing the actual test is the fact that students spend too much time on one question and end up not making it through the whole test.


Last Updated on April 18, 2021.

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