Biology: Life on Earth

Chapter 5: Cell Structure and Function

Self Test

1. Which of the following structures are found in all cells? Select the best answer. [Hint]

2. The cell theory states that __________. [Hint]

3. Which of the following is an INCORRECT statement concerning the general characteristics of prokaryotic cells? [Hint]

4. In what manner do molecules such as proteins and RNA enter into or exit from the nucleus? [Hint]

5. Chromosomes consist of __________. [Hint]

6. Which of the following correctly lists organelles that are part of the internal membrane system of eukaryotic cells? [Hint]

7. The endoplasmic reticulum is needed for __________. [Hint]

8. Sorting and modification of proteins is an important function of __________. [Hint]

9. Which of the following lists the correct order in which newly synthesized proteins are delivered to the plasma membrane? [Hint]

10. Which of the following organelle(s) is (are) found in animal cells, but not in plant cells? [Hint]

11. In certain types of genetic engineering, DNA is injected into the nucleus of a recipient animal cell. What is the fewest number of membranes that must be pierced by the microscopic needle in order to inject the DNA? (Note that the needles used are not small enough to pass through a nuclear pore.) [Hint]

12. A researcher has discovered an unusual organism deep in the crust of Earth. She wants to know whether it is prokaryotic or eukaryotic. Imagine that she has rapid tests to determine whether the following molecules are present: DNA, RNA, and the proteins that form microtubules. Which test would you advise her to use and why? [Hint]

13. Imagine that you are late for a date and you reach your friend's door out of breath because you just ran the last three blocks from the bus stop. In a lame effort to impress and to try to make your date forget that you are half an hour late, you describe what oxygen is used for in your cells. Which of the following is correct? [Hint]

14. Lysosomes contain very powerful digestive enzymes that can break down proteins, carbohydrates, and other molecules. Why don't these enzymes digest the cell itself? [Hint]

15. Why are living cells limited to remaining microscopic in size? [Hint]

16. Prokaryotic cells __________. [Hint]

17. If the nucleus is the control center of the cell, how is information encoded and shipped to the cytoplasm? [Hint]

18. The function of the endoplasmic reticulum is to __________. [Hint]

19. Which of the following characteristics of mitochondria are true? [Hint]

20. Which of the following generalizations can you make about the cytoskeleton? [Hint]

21. [Hint]

22. [Hint]

23. [Hint]

24. [Hint]

25. [Hint]

26. Plasmids are located __________. [Hint]

27. Suppose a Paramecium, a freshwater protist, was placed in salt water. What would occur (assume the salt water is hypertonic to the Paramecium)? [Hint]

28. Which organelle would you expect to be in abundance in the liver of a drug addict? [Hint]

29. Which of the following is NOT consistent with the cell theory? [Hint]

30. Which of the following would NOT have originated by endosymbiosis? [Hint]

31. The smallest type of cell are mycoplasmas, which have a diameter between 0.1 micrometer and 1.0 micrometer. Mycoplasmas most likely are __________. [Hint]

32. In which of the following does one find ribosomes? [Hint]

33. [Hint]

34. Prokaryotic cells do not contain __________.  

35.

On this image of a mitochondrion, identify the structures indicated. [Hint]

For each item below, use the pull-down menu to select the letter that labels the correct part of the image.

The letters A through E appear on an image associated with this question.

36.

Identify the indicated structures in this typical plant cell. [Hint]

For each item below, use the pull-down menu to select the letter that labels the correct part of the image.

The letters A through G appear on an image associated with this question.

37.

Identify the indicated structures on this eukaryotic cell. [Hint]

For each item below, use the pull-down menu to select the letter that labels the correct part of the image.

The letters A through G appear on an image associated with this question.

38.

Identify the structures indicated on this typical prokaryotic cell. [Hint]

For each item below, use the pull-down menu to select the letter that labels the correct part of the image.

The letters A through G appear on an image associated with this question.

39.

Label the structures of the cytoskeleton. [Hint]

For each item below, use the pull-down menu to select the letter that labels the correct part of the image.

The letters A through C appear on an image associated with this question.

40.

Identify the indicated structures on the image of a chloroplast below. [Hint]

For each item below, use the pull-down menu to select the letter that labels the correct part of the image.

The letters A through F appear on an image associated with this question.

41. The outermost boundary of an animal cell is the  

42. Which organelle contains a eukaryotic cell’s chromosomes?  

43. Most of the cell’s ATP is synthesized in the  

44. Which organelle sorts, chemically modifies, and packages newly synthesized protein?  

45. Membrane-enclosed digestive organelles that contain enzymes are called  

46. A series of membrane-enclosed channels studded with ribosomes are called  

Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.
 




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