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Theories of Biology Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

Page 1

Question 1 1. What does the double helix described by Crick and Watson look like?

Question 2 2. Which was the most important reason for finding the structure of the DNA molecule?

Question 3 3. What was the problem Crick described with an amino acid sequence only known to have two nitrogen bases?

Question 4 4. A mouse migrates from an environment where her primary food source is soft berries to an environment where her primary food source is hard wood fibers. Based on Lamarck's theory, which of these traits would the mother mouse likely acquire and pass on to her offspring?

Question 5 5. Which aspect of Lamarck's theory is incorrect?

Page 2

Question 6 6. Lamarck's theory of evolutionary change argued in favor of the:

Question 7 7. What is something that Francis Crick and James Watson did NOT discover about DNA?

Question 8 8. What does DNA stand for?

Question 9 9. What does the structure of DNA resemble?

Question 10 10. Mendel was a ______.

Page 3

Question 11 11. Mendel's experiments led to modern genetics and the use of ______.

Question 12 12. Mendel's experiments worked, unlike others who may have disproved the blending theory of heredity, because he ______ and ______.

Question 13 13. According to Darwin, why did finches have different beaks on the islands of the Galapagos?

Question 14 14. How does natural selection work?

Question 15 15. Why did Darwin wait over 20 years after he returned from his voyage to publish his theories?

Page 4

Question 16 16. The study of the genetic variation within a population is known as:

Question 17 17.

Which of the following statements does NOT represent the idea of heritability by acquired characteristics?

I. A body builder develops stronger muscles during the course of his life, so his son will be strong as well.

II. A cat that lost its tail will produce offspring with shorter tails.

III. Over time, a population of heavily striped zebras increased over those without as much striping, as the heavily striped ones had a competitive advantage over the zebras with fewer stripes, and were, therefore, better able to reproduce.

Question 18 18.

Which of the following is an example of natural selection?

I. Albino animals are rare in nature because they are easy for predators to find.

II. The fastest gazelle is least likely to be eaten by a lion.

III. The gorilla that is strong enough to become alpha male is the most likely to pass on his genes.

Question 19 19. Which of the following describes the vast number of different species found on Earth?

Question 20 20. What is the broadest group that organisms are classified into?

Page 5

Question 21 21. How can evolution be observed?

Question 22 22. What is required for a population to diverge into two separate species?

Question 23 23. What is the process of one population diverging into two separate species after many generations of isolation?

Question 24 24. Alfred Wallace is considered the Father of ________.

Question 25 25. Which of the following people did NOT work with Crick on the discovery of the double helix, or provide inspiration for him?

Page 6

Question 26 26. Lamarck hypothesized that species evolved _____.

Question 27 27. Describe the basic structure of DNA.

Question 28 28. ______ tells us that alleles separate and are passed down to the offspring.

Question 29 29. Which is the correct chronological order of events?

Question 30 30. Which of the following is NOT a principle of Darwin's theory of evolution?

Theories of Biology Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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