Science Test Set 4

Last Updated on April 8, 2024.

This practice test is not related to the GED Ready® – The Official Practice Test, produced and distributed by GED Testing Service LLC.

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

A.white blood cells

B. the skin

C.lymph nodes

D.antibodies

Question 1 of 10

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

A.a sunflower

B.An oak tree

C.A caterpillar

D.I don't know

Question 2 of 10

3.

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?

A.Chef Peter

B.Chef John

C.Both are right

D.It depends

Question 3 of 10

4. What is produced during photosynthesis?

A.oxygen and glucose

B.glucose and carbon dioxide

C.oxygen

D.all answers are correct

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?

A. evolution by natural selection

B.migration

C.inbreeding

D.I don't know

Question 5 of 10

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

A.The B-cells produce antibodies more quickly if the measles virus is encountered again.

B.The B-cells transfer this recognition to T-cells, which will then devour the viruses.

C.The B-cells more quickly recognize and respond to any other virus that invades the body.

D.The B-cells use this recognition to defend the body against other pathogens, such as bacteria

Question 6 of 10

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

A.an allergy

B.cell-mediated immunity

C.inflammatory response

D.an autoimmune disease

Question 7 of 10

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

A.A person with a family history of cancer is less likely to be screened for cancer.

B.A person with a family history of obesity is less likely to enroll in a weight loss plan.

C.A person with a family history of high blood pressure is more likely to have heart disease.

D.A person with a family history of obesity is more likely to catch a common cold.

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?

A.0% Hh: 100% hh

B.50% Hh: 25% hh

C. 75% Hh: 25% hh

D. 50% Hh: 50% hh

Question 9 of 10

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

A.reproductive replacement

B. life spans of the members

C.availability of food

D.fluctuations in atmospheric temperature

Question 10 of 10

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