quiz1key - QUIZ #1 Key 1. In which of the following is the...

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Unformatted text preview: QUIZ #1 Key 1. In which of the following is the correct monomer matched with its polymer? a. fatty acid - DNA b. monosaccharide — lipid c. glycerol - carbohydrate D. amino acid — protein The monomer, amino acid, composes the polymer, protein. 2. Deoxyribose is a sugar found in a. glucose b. enzymes C_ DNA (1. alcohol Deoxyribose is a sugar found in DNA. 3. Atherosclerosis is associated with A. fats with no double bonds b. fats With double bonds 0. phospholipids d. polyunsaturated fats Atherosclerosis is associated with saturated fats, fats with no double bonds. Page 1 4. Which of the following is true about Fig. 3.1 which represents a part of a plasma membrane? a. parts X and Z are hydrophobic B. Darts W and Z are hydrophiiic c. parts X and Y are hydrophilic d. parts W and Y are hydrophobic The plasma membrane is a double layer of phospholipids in which the hydrophilic heads of the molecules face outward and the hydrophobic tails face inward. 5. A protein which controls a metabolic reaction is called afan and is in shape. a. monosaccharide/fibrous b. phospholipid/globular c. antibody/fibrous D_ eruyme/globular Enzymes are proteins which control metabolic reactions; they are globular in structure. 6. Which of the following correctiy lists the parts of a nucleotide of RNA? 3. nitrogen‘ccntaining base, deoxyribose, phosphate b. sulfur-containing base, ribosc, phosphate C. nitrogen-containing base, ribose, phosphate d. nitrogen~containing base, ribose, sulfur An RNA nucleotide is composed of a nitrogen-containing base, a ribose, and a phosphate. 7. The shape of a protein is a criticai factor in its function. TRUE The shape of a protein is a critical factor in its function. Page 2 8. 10. A prokaryotic cell a. has no DNA B. does not have a membrane—bound nucleus 0. does not have ribosomes 6. does not have cytoplasm A prokaiyotic cell does not have a membrane-bound nucleus. . Cell walls function in a. moving organelles throughout the cell B. maintaining cell shape 0. producing the cytoskeleton d. containing DNA Cell walls function in maintaining cell shape. A bacteria‘s cytoplasm contains a. acytoskeleton b. DNA 0. enzymes D. both DNA and enzymes A bacteria's cytoplasm contains both DNA and enzymes. Page 3 11. Fig. 4.1 is a diagram of a bacterium. What structure doesY represent? a. capsule b. flagella c_ nucleoid d. wall Part Y of the diagram represents the nucleoid. 12. Chromosomes are a. condensed nucleoli b. expanded ribosomes c. expanded polysaccharides D_ condensed chromatin Chromosomes are condensed chromatin. 13. Which of the following is an incorrect match? a. ribosomes protein formation b. Golgi apparatus protein alteration C. mitochondria protein recycling d. lysosomes protein digestion Mitochondria function in ATP production. Page 4 l4. Metabolic reactions are compartmentalized in a cell by the a. cytoskeleton B_ endomembrane system c. capsule d. channel proteins Metabolic reactions are compartmentalized in a cell by the eudomembrane system. 15. Where do the vesicles originate that are involved in secretion? :1. lysoscmes b. nucleus C. Golgi apparatus d. ribosomes Vesicles involved in secretion arise from the Golgi apparatus. 16. Which of the following shows the flow of energy at the cellular level through the biosphere? a. solar energy mitochondria chloroplast b. chloroplast solar energy mitochondria C. solar energy chloroplast mitochondria cl. mitochondria solar energy - chloroplast Energy flows through the biOSphere from solar energy captured by plant chloroplasts and passed on to all organismsI mitochondria. 17. The part of the enzyme into which the substrate fits is called the a. feedback inhibitory site B. active site 0. substrate location d. None of the choices are correct. The part of the enzyme into which the substrate fits is called the active site. Page 5 18. Osmosis includes a. a semi—permeable membrane b. transport proteins c. the diffusion of water no both the diffusion of water and a semi-permeable membrane Osmosis includes diffusion of water across a semi-permeable membrane. 19. When a cell is in a solution where the concentration of solute is the same in the cell as in the solution, the solution is called A. isotonic b. hypertonic c. hypotonic d. osmotonic When a cell is in a solution where the concentration of solute is the same in the cell as in the solution, the solution is called isotonic. 20. Photosynthetic organisms are also called a. decomposers to. consumers c_ producers ' d. performers Photosynthetic organisms are also called producers. 21. Which of the following organisms do not perform photosynthesis? c. cyanobacteria (1. plants Fungi are not photosynthetic. Page 6 22. In Fig. 7.1, part X represents what part of a nlilochondrion? 23. 24. a. outer membrane B. cristae 0. matrix d. intermembrane space In Fig. 7.1, part X represents the matrix. Which of the following molecules yields the most ATP from cellular respiration? A. fat b. glucose e. pyruvate d. FADH; Fats yield more ATP than glucose molecules. Some of the substrates from cellular respiration can be used to make . a. fatty acids b. amino acids c. glycerol 11 All of the choices are correct. Some of the substrates from cellular respiration can be used to make fatty acids, amino acids and glycerol. Page 7 25. Which of the following is a list of molecules in correct order as cellular respiration proceeds? a. acetyl CoA pyruvate — glucose b. pyruvate acetleoA glucose C. glucose pyruvate acetyl CoA d. glucose acetyl CoA pyruvate Glucose is broken down into two pyruvate followed by the formation of acetyl CoA which enters the citric acid cycle. Page 8 ...
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This note was uploaded on 04/02/2008 for the course CHEM 125 taught by Professor Retsek during the Winter '08 term at Cal Poly.

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quiz1key - QUIZ #1 Key 1. In which of the following is the...

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