CHP 2-12 AP BIO TEST

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cuz213022
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117793
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CHP 2-12 AP BIO TEST
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2011-11-18 21:32:55
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CHP 12 AP BIO TEST
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CHP 2-12 AP BIO TEST
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  1. The reactive properties or chemical behavior of an atom depend on the number of
    A. hybridized orbitals in the atom
    B. electrons in each orbital in the atom
    C. electrons in the outer valence shell in the atom
    D. orbitals found in the atom
    E. valence shells in the atom
    C. electrons in the outer valence shell in the atom
    (this multiple choice question has been scrambled)
  2. What do the four elemetns most abundant in life-carbon, oxygen, hydrogen, and nitrogen-have in common?
    A. they all have the same number of valence electrons
    B. they are elements produ ed only by living cells
    C. each element exists in only one isotopic form
    D. they all have unpaired electrons in their valence shells
    E. they are equal in electronegativity
    D. they all have unpaired electron in their valence shells
    (this multiple choice question has been scrambled)
  3. In a single molecule of water, the two hydrogen atoms are bonded to a single oxygen atom by
    A. hydrogen bonds
    B. ionic bonds
    C. nonpolar covalent bonds
    D. van der Walls interactions
    E. polar covalent bonds
    E. polar covalent bonds
    (this multiple choice question has been scrambled)
  4. What do cohesion, surface tension, and adhesion have in common with reference to water?
    A. all are properties related to hydrogen bonding
    B. all increase when temperature increases
    C. Both A and C are correct
    D. all have to do with nonpolar covalent bonds
    E. all are produced by covalent bonding
    A. all are properties related to hydrogen bonding
    (this multiple choice question has been scrambled)
  5. Water's high specific heat is mainly a consequence of the
    A. inability of water to dissipate heat into dry air
    B. absorption and release of heat when hydrogen bonds break and form
    C. fact that water is a poor heat conductor
    D. small size of the water molecules
    E. high specific heat of oxygen and hydrogen atoms
    B. absorption and release of heat when hydrogen bonds break and form
    (this multiple choice question has been scrambled)
  6. Which type of molecule would be most abundant in a typical prokaryotic or eukaryotic cell?
    A. hydrocarbon
    B. protein
    C. water
    D. lipid
    E. carbohydrate
    C. water
    (this multiple choice question has been scrambled)
  7. What is the reason why hydrocarbons are not soluble in water?
    A. the C-H bond is nonpolar
    B. they are hydrophilic
    C. they are lighter than water
    D. the C-H bond is polar
    E. they are large molecules
    A. the C-H bond is nonpolar
    (this multiple choice question has been scrambled)
  8. Recent research sugest that side effects from Ritalin, the drug used to treat attention deficit disorder, may be caused by contamination of enantiomers, or molecules that
    A. have identical three-dimensional shapes
    B. differ in their electrical charge
    C. differ in the location of their double bonds
    D. are mirror images of one another
    E. lack an asymmetric carbon
    D. are mirror images of one another
    (this multiple choice question has been scrambled)
  9. Carbohydrates normally function in animals as
    A. energy-storage molecules
    B. sites of protein synthesis
    C. the functional units of lipids
    D. enzymes in the regulation of metabolic processes
    E. a component of triglycerides
    A. energy-storage molecules
    (this multiple choice question has been scrambled)
  10. (FIGURE MISSING) The molecule shown in Figure 5.3 is a
    A. polysaccharide
    B. unsaturated fatty acid
    C. polypeptide
    D. nucleic acid
    E. saturated fatty acid
    B. unsaturated fatty acid
    (this multiple choice question has been scrambled)
  11. The tertiary structure of a protein is the
    A. bonding of two amino acids together to form a dipeptide
    B. twisting of a peptide chain into an a-helix
    C. bonding together of several polypeptide chains by weak bonds
    D. order in which amino acids are joined in a peptide chain
    E. three-dimensional shape
    E. three-dimensional shape
    (this multiple choice question has been scrambled)
  12. Dehydration reactions are used in forming which of the following compounds?
    A. Only A and C are correct
    B. triglycerides
    C. polysaccharides
    D. proteins
    E. A, B, and C are correct
    E. A, B, and C are correct
    (this multiple choice question has been scrambled)
  13. Which of the following illustrates hydrolysis?
    A. the reaction of a fat to form glycerol and fatty acids with the release of water
    B. the reaction of a fat to form glycerol and fatty acids with the utilization of water
    C. the reaction of two monosaccharides to form a disaccharide with the release of water
    D. the synthesis of two amino acids to form a dipeptide with the utilization of water
    E. All of the above
    B. the reaction of a fat to form glycerol and fatty acids with the utilization of water
    (this multiple choice question has been scrambled)
  14. The element nitrogen is present in all of the following except
    A. amino acids
    B. DNA
    C. monosaccharides
    D. proteins
    E. nucleic acids
    C. monosaccharides
    (this multiple choice question has been scrambled)
  15. (FIGURE MISSING) Which of the following molecules acts as building blocks of polypeptides?
    A. 1,4, and 6
    B. 14 and 15
    C. 11,12, and 13
    D. 9 and 10
    E. 2,7, and 8
    E. 2,7, and 8
    (this multiple choice question has been scrambled)
  16. (FIGURE MISSING) Which of the following molecules could form a fat (or triacylglycerol) as a result of a dehydration reaction?
    A. 7 and 8
    B. 9 and 10
    C. 1 and 2
    D. 3 and 5
    E. 12 and 13
    B. 9 and 10
    (this multiple choice question has been scrambled)
  17. (FIGURE MISSING) Which of the following molecules has a functional group that frequently is involved in maintaining the tertiary structure of a protein?
    A. 2
    B. 10
    C. 8
    D. 13
    E. 3
    A. 2
    (this multiple choice question has been scrambled)
  18. (FIGURE MISSING) Which of the following molecules consists of a hydrophilic "head" region and a hydrophobic "tail" region?
    A. 3
    B. 7
    C. 9
    D. 5
    E. 11
    D. 5
    (this multiple choice question has been scrambled)
  19. Metabolism is best described as
    Asynthesis of macromolecules
    B. breakdown of macromolecules
    C. control of enzyme activity
    D. A and B
    E. A, B, and C
    E. A, B, and C
  20. Why is ATP an important molecule in metabolism?
    A. it energizes other molecules by transferring phosphate groups
    B. its phosphate bonds are easily formed and broken
    C. hydrolysis of its phosphate groups is endergonic
    D. two of the above
    E. all of the above
    D. two of the above
  21. Which of the following reactions could be coupled to the reaction ATP + H2O---> ADP + Pi(-7.3kcal/mol)?
    A. A + Pi ---> AP (+10 kcal/mol)
    B. B + Pi --->BP (+8 kcal/mol)
    C. CP ---> C + Pi (-4 kcal/mol)
    D. DP ---> D + Pi (-10 kcal/mol)
    E. E + Pi ---> EP (+5 kcal/mol)
    E. E + Pi ---> EP (+5 kcal/mol)
    (this multiple choice question has been scrambled)
  22. All of the following are associated with the extracellular matrix of animal cells except:
    A. cellulose
    B. integrins
    C. collagen
    D. proteoglucans
    E. fibronectins
    A. cellulose
    (this multiple choice question has been scrambled)
  23. Which of the following is not found in a prokaryotic cell?
    A. cell wall
    B. endoplasmic reticulum
    C. DNA
    D. plasma membrane
    E. ribosomes
    B. endoplasmic reticulum
    (this multiple choice question has been scrambled)
  24. Large numbers of ribosomes are present in cells that specialize in producing which of the following molecules?
    A. starches
    B. proteins
    C. lipids
    D. steroids
    E. glucose
    B. proteins
    (this multiple choice question has been scrambled)
  25. Of the following, which is probably the most common route for membrane flow in the endomembrane system?
    A. nuclear envelope---> lysosome--->golgi--->plasma membrane
    B. ER--->chloroplasts--->mitochondrion--->cell membrane
    C. roughER--->vesicles--->golgi--->plasma membrane
    D. golgi---> lysosome--->ER--->plasma membrane
    E. tonoplast--->plasma membrane---> nuclear envelope---> smooth ER
    C. roughER--->vesicles--->golgi--->plasma membrane
    (this multiple choice question has been scrambled)
  26. Organelles that contain DNA include
    A. ribosomes
    B. mitochodria
    C. chloroplasts
    D. Only B and C are correct
    E. A, B, and C are correct
    D Only B and C are correct
  27. Which of the following is not known function of the cytoskeleton?
    A. to provide mechanical support to the cell
    B. to maintain characteristic shape of the cell
    C. to assist in cell motility by interacting with specialized motor proteins
    D. to hold mitochondria and other oranelles in place within the sytosol
    E. to maintain a critical limit on cell size
    E. to maintain a critical limit on cell size
    (this multiple choice question has been scrambled)
  28. What is one of the ways that the membranes of winter wheat are able to remain fluid when it is extremely cold?
    A. by increasing the percentae of cholesterol molecules in the membrane
    B. by increasing the percentage of unsaturated phospholipids in the membrane
    C. A and B
    D. A, B, and C
    E. by decreasing the number of hydrophobic proteins in the membrane
    B. by increasing the percentage of unsaturated phospholipds in the membrane
    (this multiple choice question has been scrambled)
  29. All of the following statements abount membrane structure and function are true except:
    A. diffusion of gases is faster in air than across membranes
    B. diffusion, osmosis, and facilitated diffusion do not require any energy input from the cell
    C. voltage across the membrane depends on an unequal distribution of ions across the plasma membrane
    D. special membrane proteins can cotransport two solutes by coupling diffusion with active transport
    E. both sides of a membrane are identical in structure and function
    E. both sides of a membrane are identical in structure and function
    (this multiple choice question has been scrambled)
  30. Which of the following statements is correct about diffusion?
    A. it is a passive process in which molecules move from a region of higher concentration to a region of lower concentration
    B. it is an active process in which molecules move from a region of lower concentration to one of higher concentration
    C. it requires inegral proteins in the cell membrane
    D. it is very rapid over long distances
    E. it requires an expenditure of energy by the cell
    A. it is a passive process in which molecules move from a region of higher concentration to a region of lower concentration
    (this multiple choice question has been scrambled)
  31. (FIGURE MISSING) At the beginning of the experiment,
    A. side A is hypertonic to side B with respect to glucose
    B. side A is hypotonic to side B with respect to sodium chloride
    C. side A is isotonic to side B
    D. side A is hypothonic to side B
    E. side A is hypertonic to side B
    D. side A is hypotonic to side B
    (this multiple choice question has been scrambled)
  32. (FIGURE MISSING) If you examine side A after 3 days, you should find:
    A. no change in the concentration of NaCl and glucose and an increase in the water level
    B. no net change in the system
    C. a decrease in the concentration of NaCl, an increase in water level, and no change in the concentration of glucose
    D. a decrease in the concentration of NaCl and a decrease in the water level
    E. a decrease in the concentration of NaCl and glucose and an increase in the water level
    D. a decrease in the concentration of NaCl and a decrease in the water level
    (this multiple choice question has been scrambled)
  33. Which of the following statements concerning the breakdown of glucose to CO2 and water is (are) true?
    A. A, B, and C are correct
    B. A and B only are correct
    C. the breakdown of glucose is exergonic
    D. adding electrons to another substance is known as reduction
    E. an electron acceptor is called the reducing agent
    B. A and B only are correct
    (this multiple choice question has been scrambled)
  34. Glycolysis is believed to be one of the most ancient of metalbolic processes. Which statement below least supports this idea?
    A. glycolysis is found in all eukaryotic cells
    B. glycolysis neither uses nor needs O2
    C. if run in reverse, glycolysis will build glucose molecules
    D. the enzymes of glycolysis are found in the cytosol rather than in a membrane-enclosed organelle
    E. bacteria, the most primitive of cells, make extensive use of glycolysis
    C. if run in reverse, glycolysis will build glucose molecules
    (this multiple choice question has been scrambled)
  35. Which process in eukaryotic cells will normally proceed whether O2 is present or absent?
    A. fermentation
    B. glycolysis
    C. oxidative phosphorylation
    D. electron transport
    E. the krebs cycle
    B. glycolysis
    (this multiple choice question has been scrambled)
  36. Cellular respiration harvests the most chemical energy from which process?
    A. converting oxygen to ATP
    B. transferring electrons from organic molecules to oxygen
    C. substrate-level phosphorylation
    D. generation carbon dioxide and oxygen in the electron transport chain
    E. formin lactate from pyruvate
    B. transferring electron from organic molecules to oxygen
    (this multiple choice question has been scrambled)
  37. The color of light least effective in drining photosynthesis is
    A. yellow
    B. red
    C. orange
    D. blue
    E. green
    E. green
    (this multiple choice question has been scrambled)
  38. What is the primary function of the light reactions of photosynthesis?
    A. to produce energy-rich glucose from carbon dioxide and water
    B. to use ATP to make glucose
    C. to produce NADPH used in respiration
    D. to produce ATP and NADPH
    E. to convert light energy to the chemical energy of PGAL
    D. to produce ATP and NADPH
    (this multiple choice question has been scrambled)
  39. The chemiosomotic process in chloroplasts involves the
    A. oxidation of water to produce ATP energy
    B. diffusion of electrons through the thylakoid membrane
    C. reduction of carbon dioxide to glucose by NADPH and ATP
    D. establishment of a proton gradient
    E. movement of water by osmosis into the thylakoid space from the stroma
    D. establishment of a proton gradient
    (this multiple choice question has been scrambled)
  40. All of the following statements are correct regarding the Calvin cycle of photosynthesis except:
    A. the energy source utilized is the ATP and NADPH obtained through the light reaction
    B. the 5-carbon sugar RuBP is constantly being regenerated
    C. One of the end products is glyceraldehyde phosphate
    D. these reactions begin soon after sundown and end before sunrise
    D. these reactions begin soon after sundown and end before sunrise
    (this multiple choice question has been scrambled)
  41. From the perspective of the cell receiving the message, the three stages of cell signaling are
    A. signal reception, signal transduction, and cellular response
    B. signal reception, cellular response, and cell divison
    C. the alpha, beta, and amma stages
    D. signal reception, nucleus disintegration, and new cell generation
    E. the paracrine, local, and synaptic stages
    A. signal reception, signal transduction, and cellular response
    (this multiple choice question has been scrambled)
  42. Delta G1=100 S=0 G2=0 M=0
    The best conclusion concerning delta is that the cells
    A. are actually in the G0 phase
    B. contain only one chromosome that is very short
    C. divide in the G1 phase
    D. contain no RNA
    E. contain no DNA
    A. are actually in the G0 phase
    (this multiple choice question has been scrambled)
  43. Gamma S=48 Beta S=24
    Of the following, the best conclusion concerning the difference between the S phases for beta and gamma is that
    A. beta is a plant cell and gamma is an animal cell
    B. beta contains more RNA than gamma
    C. beta and gamma contain the same amount of DNA
    D. gamma contains more DNA than beta
    E. gamma contains 48 times more DNA and RNA than beta
    D. gamma contains more DNA than beta
    (this multiple choice question has been scrambled)
  44. If mammalian cells receive a go-ahead signal at the G1 checkpoint, they will
    A. complete cytokinesis and form new cell walls
    B. show a drop in MPF concentration
    C. exit the cycle and switch to a nondividing state
    D. complete the cycle and divide
    E. move directly into telophase
    D. complete the cycle and divide
    (this multiple choice question has been scrambled)
  45. Which of the following is true concerning cancer cells?
    A. they have escaped from cell cycle controls
    B. they do not undergo mitosis
    C. when they stop dividing they do so at random points in the cell cycle
    D. they do not exhibit density-dependent inhibition when growing in culture
    E. A, B, and C only are ture
    E. A, B, and C only are true
    (this multiple choice question has been scrambled)

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