Scientific Concepts for the Living Environment 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. An allele is _____.

Question 2 2. Which of the following is the definition of 'life span'?

Question 3 3. Which of the following statements is true?

Question 4 4.

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 5 5. Which of the following statements is true?

Page 2

Question 6 6. Which of the following statements could NOT be used to describe a multifactorial trait?

Question 7 7.

Which of the following is an example of a homologous structure or trait?

I. Arm bones of a human and wings of a bird

II. Wing of a penguin and wing of a mosquito

III. Beak of a penguin and beak of a duck

Question 8 8. An example of a reversible reaction is shown by which of the following?

Question 9 9. What constitutes a food web?

Question 10 10. What do the brackets indicate in an equilibrium equation?

Page 3

Question 11 11. Which of the following is an example of convergent evolution?

Question 12 12. What can an herbivore be categorized as?

Question 13 13.

Which of the following is an example of analogous structures or traits?

I. Leg bones of a human and leg bones of a penguin

II. Wing of a penguin and wing of a mosquito

III. Beak of a penguin and beak of a duck

Question 14 14. Which of the following is NOT a principle of Darwin's theory of evolution?

Question 15 15. A new mutation allows a cheetah to run faster and hunt down more prey than its slower counterparts. This mutation increased the _____ of the cheetah.

Page 4

Question 16 16. The locus is _____.

Question 17 17. _____ can be defined as a change in a characteristic within a population over time.

Question 18 18. Calculate the value of the equilibrium constant, K, for the system below, if 0.0954 moles of CO2, 0.0454 moles of H2, 0.0046 moles of CO, and 0.0046 moles of H2O vapor were present in a 1.00 L reaction vessel at equilibrium.

Question 19 19. A _____ is a trait which is determined by two or more genes, but not any environmental factors.

Question 20 20.

Which of the following statements is true?

I. The one thousandth base pair on chromosome one of an organism is an example of a locus.

II. Changing the DNA in a gene by one base pair could create a new allele.

III. Cells in a diploid organism possess two copies of each homolog (except gametes).

Page 5

Question 21 21. Skin cancer is a multifactorial trait. Which of the following is plausible?

Question 22 22. How many trophic levels does an omnivore feed on within an ecosystem?

Question 23 23.

Which of the following statements does NOT represent the idea of 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. Neck length in a giraffe population increased over time since taller giraffes had a competitive advantage over shorter giraffes.

Question 24 24. What is the equation for the equilibrium constant of the reaction nA + mB → xC + yD?

Question 25 25. What is chemical equilibrium?

Page 6

Question 26 26. Which of the following is the definition of 'life cycle'?

Question 27 27. The study of the genetic variation within a population is known as:

Question 28 28. Which of the following statements is true?

Question 29 29. Which of the following is NOT an example of a phenotype?

Question 30 30. Which of the following organisms is a primary consumer of a prickly pear cactus?

Scientific Concepts for the Living Environment 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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