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2015SP-BIOL-1408-43440 Biology for Non-Science Majors I_Pebble Barbero
EXAM ONE
Cheating Question – I acknowledge I won’t cheat.
You expose the bacteria Staphylococcus aureus to low levels of antibiotic methicillin. The surviving bacteria are then exposed to higher concentrations of methicillin and the process repeated until a strain of methicillin-resistant S. aureus (MRSA) was generated. To test your hypothesis, you perform an experiment by spreading the original strain of S. aureus and the
MRSA strain onto agar plates containing doses of methicillin used in the hospital, and only the
MSRA survives. MRSA infections occur in humans (homo sapiens). Homo sapiens are in which domain?___Eukarya. You notice over the past month, many students on campus have started wearing a new syle of school sweatshirt. You think to yourself that perhaps the bookstore has recently started selling this new sweatshirt. This is an example of___A Hypothesis.
An ecosystem would include all of the following except __ A Biosphere.
To be scientifically valid, a hypothesis must be ___ testable and falsifiable.
In an experiment, which of the following is NOT generally a true statement? __ The smaller the sample size the more meaningful the results.
In an experiment designed to determine if a fertilizer increased crop yield in tomato plants, the number of tomatoes produced by each plant would be the independent variable. __FALSE.
The ultimate source of energy flowing into nearly all ecosystems is __Sunlight.
You expose the bacteria Staphylococcus aureus to low levels of antibiotic methicillin. The surviving bacteria are then exposed to higher concentrations of methicillin and the process repeated until a strain of methicillin-resistant S. aureus (MRSA) was generated. To test your hypothesis, you perform an experiment by spreading the original strain of S. aureus and the
MRSA strain onto agar plates containing doses of methicillin used in the hospital, and only the
MSRA survives. How could some of the original strain of S. aureus bacteria survive in the presence of methicillin? ___Some bacteria had pre-existing mutations that gave resistance.
The mass number of an atom is defined as__The total number of protons and neutrons of an atom. A hydrogen atom has one electron. How many covalent bonds can hydrogen form? __One covalent bond.
Which of the following types of particles are fond in the nucleus of an atom?__Protons & neutrons. An individual water molecule can bind to another water molecule through formation of__A hydrogen bond.
Water is best described as which of the following? __ A polar molecule.
If a covalent bond is polar__One of the atoms has a partial negative charge.
A substance having a pH of 2 would be best described as__ A strong acid.
What is the fundamental difference between covalent and ionic bonding? __In covalent bonding, the partners share a pair of electrons, in an ionic bondm one partner accepts electrons from the other.

18. Which of the following statements regarding carbon is FALSE?__Carbon has the ability to bond with up to six other atoms.
19. The primary building block (monomer) of proteins is __An amino acid.
20. The generic name for reactions that build large molecules form a set of similar monomers is
___Dehydration synthesis.
21. Propanol and isopropanol are isomers. This means that they have__ The same molecular formula but different chemical properties.
22. The primary building block (monomer) of nucleic acids is__A nucleotide.
23. Which of the following are not lipids? __Starches.
24. Fatty acids with double bonds between some of their carbons are said to be__Unsaturated.
25. The four major groups of organic compounds are __Carbohydrates, lipids, proteins, and nucleic acids. 26. A dense, irregularly shaped region within the nucleus in which subunits of ribosomes are synthesized is called the __Nucleolus.
27. Plasma membranes are permeable to__Nonpolar molecules such as CO2.
28. A membrane-enclosed nucleus is NOT present in__ Archaean cells.
29. Which of the following statements regarding Golgi complex is False? The Golgi complex decreases in size when a cell increases its protein production.
30. Eukaryotic cells are 10-100 times the size of prokaryotic cells. How do eukaryotic cells resolve the surface area to volume limitations that favor smaller cells? Organelles keep reactions compartmentalized and concentrated.
31. A bacterial cell’s DNA is found __ In the cytoplasm.
32. You are told that the cells on a microscope slide are plant, animal or bacterial. You look at them through a microscope and see cell walls and membrane bound organelles. You conclude correctly that the cells most likely to be__ Plant Cells.
33. An organelle found in plant cells & some members of the kingdom Protista but not in animal cells is a ____Chloroplast.
34. Several dogs in a neighborhood bark loudly in response to one another form a __population.
35. New characteristics that appear when smaller parts combine are ___emergent properties.
36. How many electrons would an atom with an atomic number of 9 contain? 9
37. Which emergent property enables an insect to walk on water? Surface tension.
38. An alcohol would be characterized by a/an hydroxyl group.
39. Glycogen and starch are examples of ___polysaccharides.
40. All cells contain cytoplasm,_____a plasma membrane, ribosomes, genetic info, and RNA.
41. Which of the following statement concerning prokaryotes is TRUE? __Prokaryotes contain DNA and ribosomes.
42. How many neutrons does the nucleus of phosphorus (P) contain? Correct Answer: 16
43. How many electrons does Sulfur (S)contain? Correct Answer: 16
44. How many electrons does Carbon ©contain? Correct Answer: 6
45. For the following medical condition describes the likely cellular organelle or structure that has been affected in such a way as to cause the condition (note: There may be more than one organelle or structure involved.) A person dies within minutes after ingesting cyanide because

ATP is no longer being synthesized.____If no ATP is being made then the mitochondria has ceased functioning. Cyanide must destroy mitochondria and without energy to pump the heart a person dies.
46. Many anticancer drugs are directed at either stabilizing or destabilizing the tubulin protein that makes up microtubules. Although these drugs are often effect vice in treating cancer, the treatment can lead to hair loss and nausea. What is the function of microtubules? Why would destroying microtubules be an effective way to prevent cancer from spreading?___Microtubules function in cell movement. They assist in moving the chromosomes around during cell division. If the anti-cancer drug targets the microtubules, cell division would be halted because there would be no way to move the chromosomes around and divide them between the two cells. Halting division of cancer cells prevents cancer cells from spreading.