Biol100 f07 McClenaghan exam1

Biol100 f07 McClenaghan exam1 - Biology 100 McClenaghan...

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Unformatted text preview: Biology 100 McClenaghan Fall 2007 EXAM I WHITE FORM W . Write your NAME, RED ID and the COLOR (WHITE or GREEN) of your exam on your Scantron. - . Mark your answers in PENCIL in the appropriate place on the answer sheet AND on your exam. . There is only ONE correct answer per question and each one is worth two points (100 points total). . You may keep this exam when you’re finished. . Exam keys will be posted on Blackboard shortly after the exam. Scores will also be posted on Blackboard. . Do your own work. . Good Luck! 1. All living things can be classified into 1 of 3 large groups. These groups make up the most general taxonomic category e . a. kingdom b domain c. species d. family e. order 2. Which of the following is NOT one of the atoms that make up 95% of living material? alcium b. Hydrogen c. Carbon (1. Nitrogen e. Oxygen 3. In plants, excess mono ccharides are stored as a polysaccharide called . a. starch @ cellulose c. fat (1. glycogen e. ATP 4. This cell organelle contains powerful digestive enzymes and is only found in animal cells. What is it? lyzosome b. Golgi body c. rough ER d. vacuole e. mitochondrion 5. ADP is prod r... from ATP when a (an) bond is broken on the ATP molecule. a. ionic peptide c. high energy phosphate d. hydrogen e. osmotic 6. Since we humans breath air containing oxygen, we no longer need or are able to carry out anaerobic respiration. TRUE or FALSE? a. True G False 7. In photosynthesis, a 3-carbon compound called is a precursor for glucose and various other molecules. a. ATP b. C02 @G3P d. chlorophyll e. lactic acid 8. All the organisms and the physical environment at a particular location comprise one of the most complex of all biological systems, the & biosphere b. community ecosystem (1. population e. none of the above 9. The polar nature of individual water molecules results in water molecules bonding with one another by way of bonds. a. ionic b. polar covalent c. non-polar covalent @hydrogen . e. municipal 10. Molecules of constitute the genetic material that is passed from parent to offspring by reproduction. a. protein b. ATP @ DNA (1. RNA ' e. glycogen Page 1 of 4 5. Organisms in the domains Archaea and Bacteria are composed of cells. . ‘\ rokaryotic b. karyotic c. eukaryotic . d. plant e. animal 26. Cells have the ability to move some molecules against the concentration gradient (e. g. from low to high). Which of following processes does this? _ I . a. diffusion b. osmosis c. denaturation @ active transport e. passwe transport 27. In aerobic respiration, “metabolic water” is produced by what process? a! glycolysis la: Krebs cycle c. Calvin cycle (1. the light reactions @oxidative phosphorylation 28. In photosynthesis, the Calvin cycle reactions only occur in the absence of sunlight. True or False? QTrue b. False 29. Protein molecules in our blood called “buffers” maintain blood pH at a relatively constant 7.4. This phenomenon is an example of . a. metabolism b. phosphorylation c. endocytosis homeostasis e photosynthesis 30. Pure H20 has a pH of 7.0. Therefore, it is considered to be . a. abuffer b. an acid c. abase d. an isotope neutral 31. Maltose (malt sugar) is formed by joining 2 glucose molecules together. Thus, maltose would be classified as a a. monosaccharide ' polysaccharide c. fatty acid d. disaccharide e. nucleotide 1:32.. The basic unit of the cellular cytoskeleton is a structure called 11) . a. cilia b. flagella c. endoplasmic reticulum d. microtubule - e. granum 33. The plasma membrane only allows certain molecules to pa through it. This characteristic is called __ a. osmotic pressure b. signal transduction @selective permeability d. hypotonicity e. none of the above 34. Oxidative phosphorylation produces 34 ATP from a single molecule of glucose under optimal conditions. Therefore, ATP are enerated directly by the Krebs cycle and glycolysis in aerobic respiration. a. 0 ’ b. 2 c) 4 d. 8 e. 20 35. The light reactions of photosynthesis take place on disk-shaped structures called Kg thylakoids b. cristae c. stomata d. mesophyll e. stroma 36. The field of biology that is responsi ' - for identifying, classifying and naming organisms is called a. genetics b. ecology a taxonomy d. physiology e. none of the above 37. In Europe, has reduced the pH of the water in some lakes to the point where they no longer sustain life. a. global warming b. sewage runoff c. pesticide runoff acid rain 6. none of the above I 38. Amino acids are similar to carbohydrates in that they contain carbon, oxygen and hydrogen. In addition, all amino acids also contain . a. phosphorus b. sulfur c. sodium nitrogen e. potassium Page 3 of 4 39. The cells that make up endocrine glands are specialized for producing protein hormones that are secreted b the cells into the bloodstream. These proteins are produced by ribosomes embedded in the @ rough ER b. smooth ER 0. nucleolus d. Golgi apparatus e. central vacuole ~40. The concentration of water inside a red blood cell (RBC) is about 95%. What will happen if RBCs are , placed into an environment of distilled (100%) w ter? 3 a. They will shrink in size. They will increase in size. c. They will stay the same size. (1. Can’t say without knowing what’s dissolved in the cell. 3 e. They will be very happy. *41. The end products of alcohol fermentation are ethyl alcohol, ATP, C02, and . water b. 02 c. G3P d. NAD+ e. lactic cid 42. Green plants are capable of photosynthesis, but not aerobic respiration. TRUE or FALSE? a. True False 43. Biologists believe that all species, living and extinct, are the descendants of a common ancestor that appeared on the earth about years ago. a. 6,000 b. 6 million c. 60 million ' d. 600 million @35 billion 44. A molecules of table salt (NaCl) is formed when a Na atom loses an electron and that electron is picked up by a Cl atom. The Na atom and the C1 atom bond with one another because of the net positive charge on the Na and the net nega 've charge on the Cl. This type of chemical bond is called a “ bond.” a. hydrogen b ionic c. polar covalent d. nonpolar covalent e. peptide 45. Since fats and proteins are not sugars, they cannot be used by cells as a source of energy. m or FALSE? .. a. True False - 46. Which of the following would you find in prokaryotic cells, but NQT in eukaryotic cells? @ ribosomes b. a nucleiod region 0. mitochondria d. lyzosomes e. chloroplasts 47. Wastes stored in vacuoles inside cells can be moved through the plasma membrane and released into the (Environment. This process is called . ‘oncytosis b. pinocytosis c. diffusion d. phagocytosis e. osmosis 48. The first step in both aerobic and anaerobic respiration is a process lled . a. the Krebs cycle b. the Calvin cycle c. denaturaion <3 glycolysis e. carbon fixation ’49. Organisms that are able to synthesize their own food are called autotrophs b. parasites c. heterotrophs d. prokaryotes e. fungi 50. Some eukaryotic cells have long, whip-like structures called that are used for locomotion. C29 flagella b. cilia c. grana d. Golgi apparatus e. oars Page 4 of 4 11. The structure called the 2 gives eukaryotic plants cells rigidity and is absent from animal cells. a. plasma membrane b. cell wall c. chloroplast d. nuclear envelope microtbule 12. ATP is a nucleotide because it contains a 5-carbon sugar, phosphate groups and a (an) . a. amino acid ®itrogenous base c. glycerol (1. fatty acid e. polypeptide ’3’ 13. One of the end products of glycolysis is a 3—carboh molecule called ‘ a. lactic acid pyruvic acid c. G3P (1. glycerol e. amino acid 14. ATP is required in the process that converts atmospheric carbon dioxide into carbohydrates via photosynthesis. This ATP comes from . a. aerobic respiration b. the Calvin cycle (3 the light reactions (1. glycolysis e. osmosis 15. In biology, the basic unit of life is the a. cell b. organism species d. domain e. atom 16. Consider these three molecules: NH3, C02, H20. Which of the following statements is TRLJE for all 3 molecules? a. All three are organic compounds. b. All three. are formed through ionic bonding. c. All three are radioactive. All three display polar covalent bonding. e. All three are acid substances. 17. A fat consists of a 3-carbon molecule of and 3 long—chain molecules called fatty acids. glycogen b. cellulose c. chitin (1. glycerol 6. starch ” 18. Chloroplasts contain the photosynthetic machinery surrounded by a fluid called “ a. grana b. cristae stroma d. chromatin e. cilia 19. In cells, biologicabisable energy is located in molecules of . a. glucose b ATP c. G3P d. DNA e. fat ’ 20. In aerobic respiration, what compound is undergoing oxidation? a. glucose b. water @carbon dioxide d. oxyen e. DNA /“ 21. The cells containing chloroplasts are concentrated in plant tissues called _, which are located in the middle of leaves. a. stomata b. mesophyll c. stroma ytochromes e. chlorophylls , 22. is often referred to as biology’s “central unifying concept.” Evolution b. Metabolism c. Homeostasis d. Taxonomy e. Chemistry 23. Most carbon atoms have an atomic number of 6 and a mass number of 12. Therefore, there are eutrons in the nucleus of these carbon atoms. 6 b. 12 c. 18 d. 0 e. can say with only this information -’ 24,. These lipids are a major component of the cell plasma membrane. What are they? Q phospholipids b. fatty acids c. steroids (1. nucleic acids e. glycerols Page 2 of 4 ...
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Biol100 f07 McClenaghan exam1 - Biology 100 McClenaghan...

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