NAME __________________________
AP BIOLOGY TEST- Chapters 6, 7, and 10
1.
One of the most pronounced differences between animal and plant cells is that
(A) animal cells alone have one or more large vacuoles
(B) animal cells alone have a nucleolus
(C) animal cells alone have their nuclear chromatin attached to the spindle fibers during mitosis
(D) plant cells alone have rough endoplasmic reticulum
(E) plant cells alone have relatively thick, rigid cell walls
1986 AP EXAM
2.
Which of the following macromolecules is primarily responsible for the insolubility of cell membranes in water?
(A) Starch
(B) Cellulose
(C) Protein
(D) Phospholipid
(E) Glycogen 1986 AP EXAM
3.
In cells, which of the following can function to give shape, enable movement, and anchor organelles?
(A) Vacuoles filled with water and surrounded by a single membrane
(B) Ribosomes, peroxisomes, and lysosomes
(C) Microtubules, microfilaments, intermediate fibers, and microtrabeculae
(D) The interconnected networks of the endoplasmic reticulum
(E) Golgi apparatus and associated vesicles in the cytoplasm
1986 AP EXAM
4.
Mitosis in flowering plants is similar to mitosis in animals in that in both
(A) a cell plate forms
(B) synapsis of homologous chromosomes occurs
(C) large centrioles attach to the spindle fibers
(D) each daughter cell has half the number of chromosomes found in each parent cell
(E) centromeres uncouple and chromosomes move apart
1986 AP EXAM
5.
All of the following statements about a chloroplast and a mitochondrion are true EXCEPT:
(A) Both use proton gradients for energy production.
(B) Both capture light energy.
(C) Both contain DNA.
(D) Both are bounded by two unit membranes.
(E) Both synthesize ATP.
1986 AP EXAM

6.
Prokaryotes differ from eukaryotes in that only the prokaryotes contain
(A) mitochondria in which glucose is oxidized
(B) DNA that is not bound to histone protein
(C) chromosomes enclosed within a nuclear envelope
(D) photosynthetic pigments in plastids
(E) plasma membranes surrounding the cytoplasm 1986 AP EXAM
7.
All of the following are functions of the smooth endoplasmic reticulum of animals EXCEPT
(A) detoxification of poisons in the liver
(B) storage of Ca2+ in the sarcomere of muscles
(C) synthesis of proteins
(D) synthesis of lipids
(E) synthesis of steroid hormones
1986 AP EXAM
8. The organelle that is a major producer of ATP and is found in both heterotrophs and autotrophs is the
(A) chloroplast
(B) nucleus
(C) ribosome
(D) Golgi apparatus
(E) mitochondrion 1990 AP EXAM
9. Which of the following would result if the sodium-potassium pump of a neuron were inoperative?
(A) The movement of chloride ions would produce an action potential.
(B) An impulse would travel from the axon to the dendrites of the neuron.
(C) The rate of transmission of the impulse would greatly increase.
(D) The rate of ATP synthesis would increase.
(E) An action potential would not occur. 1990 AP EXAM
10. All of the following cell components are found in prokaryotic cells EXCEPT
(A) DNA
(B) ribosomes
(C) cell membrane
(D) nuclear envelope
(E) enzymes 1990 AP EXAM
11. Structures found in the cells of both angiosperms and mammals are
(A) cell walls and cell membranes
(B) centrioles and lysosomes
(C) chloroplasts and ribosomes
(D) cell membranes and chromosomes
(E) contractile vacuoles and leucoplasts 1990 AP EXAM

12. Cytokinesis is the portion of the cell cycle during which
(A) the growth of cells is momentarily arrested in the G
(B) the amount of DNA per chromosome doubles
(C) centromeres uncouple and chromatids separate
(D) a cell plate is formed in plant cells
(E) the nuclear membrane breaks down
16. The nucleolus functions in the production of
(A) Golgi apparatus
(B) microtubules
(C) mitochondria
(D) ribosomes
(E) endoplasmic reticulum
2
stage
1990 AP EXAM
13. If plant cells are immersed in distilled water, the resulting movement of water into the cells is called
(A) conduction
(B) active transport
(C) transpiration
(D) osmosis
(E) facilitated diffusion
14. Which of the following is the primary role of the lysosome?
(A) ATP synthesis
(B) Intracellular digestion
(C) Lipid transport
(D) Carbohydrate storage
(E) Protein synthesis
1990 AP EXAM
1990 AP EXAM
15. The cytoplasmic channels between plant cells which are most similar to gap junctions between animal cells are called
(A) middle lamellas
(B) tonoplasts
(C) plasmodesmata
(D) tight junctions
(E) desmosomes 1990 AP EXAM
1994 AP EXAM
17. Which of the following can be used to determine the rate of enzyme-catalyzed reactions?
(A) Rate of disappearance of the enzyme
(B) Rate of disappearance of the substrate
(C) Rate of disappearance of the product
(D) Change in volume of the solution
(E) Increase in activation energy
1994 AP EXAM

18. Which of the following is a characteristic of mitochondria and chloroplasts that supports the endosymbiotic theory?
(A) Both have bacteria-like polysaccharide cell walls.
(B) Both can reproduce on their own outside of the cell.
(C) Both contain DNA molecules.
(D) Both contain endoplasmic reticulum and Golgi bodies.
(E) Both contain ribosomes that are identical to ribosomes of the eukaryotic cytoplasm.
1994 AP EXAM
19. Which of the following are characteristic of both prokaryotic and eukaryotic cells?
(A) Cytoplasm and a well-defined nucleus surrounded by a membrane
(B) Membranous sites of ATP synthesis, Golgi complex, and ribosomes
(C) Mitochondria, nucleus, and ribosomes
(D) Cell wall, several chromosomes, and cytoplasm
(E) Cell membrane, ribosomes, DNA, and RNA 1994 AP EXAM
20. Unlike the cells of flowering plants, the cells of animals are characterized by which of the following?
(A) Mitochondria
(B) A nucleus surrounded by a double membrane
(C) Centrioles
(D) A plasma membrane surrounded by a nonliving cell wall
(E) A single large central vacuole
1994 AP EXAM
21. Which of the following organelles modifies and packages for secretion the materials produced by the ribosomes?
(A) The chloroplast
(B) The Golgi apparatus
(C) The nucleus
(D) The nucleolus
(E) The mitochondrion 1999 AP EXAM
22. A student using a light microscope observes a cell and correctly decides that it is a plant cell because
(A) ribosomes are visible
(B) an endoplasmic reticulum can be seen
(C) a cell membrane is present
(D) it has a large central vacuole
(E) centrioles are present 1999 AP EXAM
23. Which of the following best supports the statement that mitochondria are descendants of endosymbiotic bacteria-like cells?
(A) Mitochondria and bacteria possess similar ribosomes and DNA.
(B) Mitochondria and bacteria possess similar nuclei.
(C) Glycolysis occurs in both mitochondria and bacteria.
(D) Both mitochondria and bacteria have microtubules.
(E) Neither mitochondria nor bacteria possess chloroplasts. 1999 AP EXAM

24. Membranes are components of all of the following EXCEPT a
(A) microtubule
(B) nucleus
(C) Golgi apparatus
(D) mitochondrion
(E) lysosome 1999 AP EXAM
25. Prokaryotic and eukaryotic cells generally have which of the following features in common?
(A) A membrane-bound nucleus
(B) A cell wall made of cellulose
(C) Ribosomes
(D) Flagella or cilia that contain microtubules
(E) Linear chromosomes made of DNA and protein 1999 AP EXAM
26. Which of the following is best observed by using a compound light microscope?
(A) A eukaryotic cell
(B) A virus
(C) A DNA sequence
(D) The inner structure of a mitochondrion
(E) A nuclear pore 1999 AP EXAM
27. All of the following are typical components of the plasma membrane of a eukaryotic cell EXCEPT
(A) glycoproteins
(B) cytochromes
(C) cholesterol
(D) phospholipids
(E) integral proteins 1999 AP EXAM
28. Which of the following cellular processes is coupled with the hydrolysis of ATP?
(A) Facilitated diffusion
(B) Active transport
(C) Chemiosmosis
(D) Osmosis
(E) Na + influx into a nerve cell 1999 AP EXAM
29. Which of the following cells would most likely have the greatest concentration of densely packed rough endoplasmic reticulum?
(A) An amoeba engulfing small ciliates
(B) A bioluminescent bacterial cell
(C) A pancreatic cell engaged in the production of digestive enzymes
(D) A functional phloem cell at maturity
(E) An epithelial cell whose DNA is replicating before mitosis 1999 AP EXAM

30. Which of the following is an example of active transport across a membrane?
(A) The movement of water from a nephron into the collecting duct of the kidney
(B) The movement of glucose by facilitated diffusion into a liver cell
(C) The movement of water from the inside of a cell into a surrounding hypertonic medium
(D) The movement of Na + into a neuron as a nerve impulse is generated
(E) The movement of H + into a thylakoid disc during photosynthesis 1999 AP EXAM
31. Which of the following cells would most likely have the greatest concentration of densely packed rough endoplasmic reticulum?
(A) An amoeba engulfing small ciliates
(B) A bioluminescent bacterial cell
(C) A pancreatic cell engaged in the production of digestive enzymes
(D) A functional phloem cell at maturity
(E) An epithelial cell whose DNA is replicating before mitosis 2002 AP EXAM
32. Most cells that have become transformed into cancer cells have which of the following characteristics when compared to normal, healthy cells?
(A) Shorter cell cycle
(B) More carefully regulated rates of cell division
(C) Lower rates of mitosis
(D) Higher rates of protein translation
(E) Identical DNA
33. A prokaryotic cell has which of the following?
(A) Centrioles
(B) Lysosomes
2002 AP EXAM
(C) Plasma membrane
(D) Mitochondria
(E) Endoplasmic reticulum 2002 AP EXAM
34. A biologist counted 2,500 cells from an embryo on a microscope slide and recorded the following data.
Stage
Prophase
Metaphase
Anaphase
Telophase
Interphase
Total
Number of Cells
125
50
50
25
2,250
2,500
If these cells had been dividing randomly, it could be reasonably concluded that
(A) the duration of anaphase is approximately one-half that of telophase
(B) prophase is approximately three times as long as telophase
(C) metaphase is the shortest stage of the cell cycle
(D) interphase is the longest stage of the cell cycle
(E) the chromosomes can first be seen in prophase 2002 AP EXAM

35. Which of the following provides the weakest evidence that mitochondria were once free-living prokaryotes?
(A) Mitochondrial ribosomes resemble those of prokaryotes.
(B) Mitochondria have DNA that is circular and does not have associated protein.
(C) Enzyme pathways on mitochondrial membranes resemble those found on modem prokaryote membranes.
(D) Mitochondria reproduce by a process similar to binary fission.
(E) Mitochondria and prokaryotes both are found in a variety of sizes. 2002 AP EXAM
36. Simple diffusion and facilitated diffusion are related in that both
(A) require protein carriers
(B) depend on a concentration gradient
(C) occur via contractions of cytoskeletal elements attached to membrane proteins
(D) are endergonic processes and thus require the hydrolysis of ATP
(E) occur in eukaryotic cells but not in prokaryotic cells 2002 AP EXAM
37. Which of the following is correct concerning a spherical cell?
(A) As the diameter decreases, the surface area remains the same.
(B) As the diameter decreases, the surface area increases.
(C) As the diameter decreases, the surface-to volume ratio increases.
(D) As the diameter increases, the volume decreases.
(E) The surface-to-volume ratio is independent of the diameter. 2002 AP EXAM

Questions 38-41 refer to the following diagram of a plant cell .
A
B
C
D
E
_____ 38. Site of conversion. of chemical energy of glucose to ATP
_____ 39. Site of modification and packaging of proteins and lipids prior to export from the cell
_____ 40. Site of transport of materials into and out of the cell
_____ 41. Evolved from a photoautotrophic prokaryote
* * * * * * * * * * *
Questions 42-44 refer to the diagram of the plasma membrane below.
* *
2002 AP EXAM*
* * *
_____ 42. Hydrophilic portion of lipid molecule
_____ 43. Cell-recognition component
_____ 44. Carriers or permeases involved in cell transport 1990 AP EXAM

Questions 45-48
A scientist determined the rate of an enzyme-catalyzed reaction by measuring the amount of product formed over time. The following curve was generated from the data collected.
45. Based solely on the curve, what can be said concerning the calculated reaction rates at 1 minute and at 2 minutes?
(A) The rate after 2 minutes is greater than the rate after 1 minute.
(B) The rates are the same at 1 minute and at 2 minutes.
(C) The rates are affected by high concentrations of inhibitors.
(D) The rates are both zero.
(E) The greater the rate, the faster the enzyme is denatured.
46. The rate of the reaction could also be determined by
(A) measuring the change in the amount of enzyme
(B) measuring the change in the amount of substrate
(C) measuring the change in salt concentration
(D) adding more substrate
(E) adding more enzyme
47. What is the most likely explanation for the change in the slope of the line between 3 and 5 minutes?
(A) The enzyme had denatured.
(B) The enzyme had achieved its maximum velocity.
(C) A large amount of the substrate had been consumed.
(D) An allosteric inhibitor appeared.
(E) There was a dramatic change in the pH.
48. During which time interval is the reaction rate lowest?
(A) 0-1 minute
(B) 1-2 minutes
(C) 2-3 minutes
(D) 3-4 minutes
(E) 4-5 minutes
2002 AP EXAM

Questions 49-51 refer to the graph below, which illustrates the percent change in the mass of pieces of plant tissue placed in solutions of different sucrose molarities.
49. Which of the following occurs in the tissue that is placed in 0.6 M sucrose?
(A) The cells become turgid.
(B) The cells burst.
(C) The volume of the vacuoles decreases.
(D) The volume of the cytoplasm increases.
(E) The cells remain the same as before.
50. The approximate molarity of the solution in which the mass of the plant pieces would not change is
(A) 0.0 M
(B) 0.1 M
(C) 0.3 M
(D) 0.5 M
(E) 0.7 M
51. Water enters and leaves the plant cells primarily by
(A) endocytosis
(B) phagocytosis
(C) osmosis
(D) active transport
(E) facilitated diffusion
2002 AP EXAM

Questions 52-54.
A biologist prepares an in vitro analysis of the activity of the enzyme amylase, which promotes the hydrolysis of polysaccharides to monosaccharide residues. Three flasks containing 5 milliliters of 4 percent amylose (starch) in water are prepared with the addition at time zero of each of the substances indicated in the diagrams below.
52. In an experiment to test the effect of amylase on starch, the control would be
(A) flask A only
(B) flask B only
(C) flask C only
(D) flasks A and B
(E) flasks A and C
53. After 2 minutes, a positive test for sugar would most likely be observed in
(A) flask A only
(B) flask B only
(C) flask C only
(D) flasks A and C
(E) flasks Band C
54. Support for the hypothesis of enzyme denaturation can be obtained by comparing starch digestion in
(A) flasks A and B after 5 minutes
(B) flasks Band C after 5 minutes
(C) flasks A and C after 5 minutes
(D) flask A at time zero and again after 5 minutes
(E) flask B at time zero and again after 5 minutes
1986 AP EXAM

Questions 55-57 refer to an experiment in which a dialysis bag is filled with a mixture of 3% starch and 3% glucose and placed in a beaker of distilled water, as show below. After 3 hours, glucose can be detected in the water outside the dialysis tubing bag, but starch cannot.
55. From the initial conditions and results described, which of the following is a logical conclusion?
(A) The initial concentration of glucose in the bag is higher than the initial concentration of starch in the bag.
(B) The pores of the bag are larger than the glucose molecules but smaller than the starch molecules.
(C) The bag is not selectively permeable.
(D) A net movement of water into the beaker has occurred.
(E) The molarity of the solution in the bag and the molarity of the solution in the surrounding beaker are the same.
56. Which of the following best describes the condiition expected after 24 hours?
(A) The bag will contain more water than it did in the original condition.
(B) The contents of the bag will have the same osmotic concentration as the surrounding solution.
(C) Water potential in the bag will be greater than water potential in the surrounding solution.
(D) Starch molecules will continue to pass through the bag.
(E) A glucose test on the solution in the bag will be negative.
57. If, instead of the bag, a potato slice were placed in the beaker of distilled water, which of the following would be true of the potato slice?
(A) It would gain mass
(B) It would neither gain nor lose mass
(C) It would absorb solutes from the surrounding liquid.
(D) It would lose water until water potential inside the cells is equal to zero.
(E) The cells of the potato would increase their metabolic activity.
1999 AP EXAM

TAKE HOME ESSAY ?’s
1. Cells transport substances across their membranes.
Choose THREE of the following four types of transport:
For each of the three transport types you choose,
Osmosis
Active transport
Facilitated diffusion
Endocytosis/Exocytosis
A) Describe the transport process and explain how the organization of cell membranes functions in the movement of specific molecules across the membrane AND
*
B) Explain the significance of each type of transport to a specific cell (you may use different cell types
* as examples)
* * * * * * * * *
1998 AP Exam
* * * *
2. A laboratory assistant prepare the solutions of a 0.8 M, 0.6 M, 0.4 M, and 0.2 M sucrose, but forgot to label the containers. After realizing the error, the assistant randomly labeled the flasks containing these four unknown solutions as Flask A, Flask B, Flask C, and Flask D.
Design an experiment, based on the principles of diffusion and osmosis, that the assistant could use to determine which of the flasks contains each of the four unknown solutions.
Include in your answer:
A) a description of how you would set up and perform the experiment
B) the results you would expect from your experiment
C) an explanation of those results based on the principles involved
BE SURE TO CLEARLY STATE THE PRINCIPLES ADDRESSED IN YOUR DISCUSSION
1992 AP EXAM