DOC PREVIEW
SMCCCD BIOL 240 - Bio 240 Microbiology Exam #1

This preview shows page 1 out of 3 pages.

Save
View full document
View full document
Premium Document
Do you want full access? Go Premium and unlock all 3 pages.
Access to all documents
Download any document
Ad free experience
Premium Document
Do you want full access? Go Premium and unlock all 3 pages.
Access to all documents
Download any document
Ad free experience

Unformatted text preview:

Bio 240 Microbiology Exam #1 Name _____________The following is a sample of the type of exams that I will be giving in class. Try completing this exam in 45 minutes. This should be roughly half the size of your exam.Nick1) Which of the following pairs is mismatched?a) immunologist – studies ecology of Legionella pneumophilab) virologist -- studies human immunodeficiency virusc) Microbial ecologist -- studies bacteria that degrade oild) Microbial physiologist – studies fermentation of sourdough breade) Molecular biologist – studies recombinant DNA2) You are observing a cell through a microscope and note that it has not apparent nucleus. You conclude that it most likelya) has a peptidoglycan cell wallb) has a cellulose cell wallc) moves by pseudopodsd) is part of a multicellular animale) none of the above3) In the light microscopes that you use in class, light passes through 3 lenses before entering your eye. They include (3)a) the light sourceb) the objectivec) the oculard) the irise) the condenser4) Which type of microscopy takes advantage of differences in the refractive indexes of cell structuresa) oil immersionb) Darkfield microscopec) transmission electron microscoped) Phase-contrast microscopee) Brightfield microscope5) After a gram stain you find blue rods with many colorless cocci. What stain would you do next?a) An acid-fast stainb) A flagella stainc) A capsule staind) An endospore staine) A simple stain6) What word best describes the following arrangement of cellsa) diplociccib) streptococcic) tetradd) sarcinaee) staphylococci7) Whish of the following is not a chemical component of a bacterial cell wall?a) celluloseb) peptidoglycanc) teichoic acidsd) peptide chainse) N-acetylmuramic acid8) Which of the following is not part of the active transport process?a) plasma membraneb) carrier proteinsc) ATPd) Cell walle) None of the above9) Which of the following is not true about gram negative cell walls?a) they protect the cell in a hypotonic environment.b) They have an extra outer layer composed of lipoproteins, lipopolysaccharides, and phospholipids.c) They are toxic to humans.d) They are sensitive to penicillin.e) Their Gram reaction is due to the outer membrane10) What will happen if a bacterial cell is placed in distilled water with lysozyme?1Bio 240 Microbiology Exam #1 Name _____________a) the cell will plasmolyze.b) The cell will undergo osmotic lysis.c) Water will leave the celld) Lysozyme will diffuse into the cell.e) No change will result: the solution is isotonic.11) According to the chemiosmitic mechanism, ATP is generated whena) Electrons are transferred between carrier molecules.b) A high energy phosphate group is transferred form an intermediate metabolite to ADP.c) Chlorophyll liberates an electron.d) Protons are moved across a membrane.e) Cells lyse in a hypotonic environment.12) Which of the following is not an end produce of fermentation?a) lactic acid b) ethyl alcohol c) glycerold) pyruvic acid e) acetone13) Which of the following will have effects on the action of an enzyme( all that apply)a) temperatureb) pHc) presence of certain metalsd) presence of certain organic cofactorse) presence of membranes14) Which of the following are true about Archaea (4)a) they are prokaryotesb) they lack peptidoglycan in their cell wallsc) some are thermoacidophiles: others are extreme halophilesd) evidence suggests they evolved form eukaryotese) some produce methane form carbon dioxide and hydrogen.15) Serological testing is based on the fact thata) all bacteria have the same antigensb) antibodies react specifically with an antigenc) the human body makes antibodies against bacteriad) antibodies cause the formation of antigense) bacteria clump together when mixed with any antibodies.16) A primary difference between cyanobacteria and purple and green phototrophic bacteria is?a) energy source b) cell wall type c) Oxygen production d) cell type e) color17) You have isolated a gram-positive rod. What test will you perform next?a) gram stain b) lactose fermentation c) endospore stain d) flagella stain e) DNA fingerprintShort answers. Fill in the blanks or give a short answer for the following.1) Your field of view through a microscope is 0.3 millimeters. If you have a worm that takes up half of your field of view it would be ______ micrometers. (2pt)2) You have a sample of bacteria growing on a plate. You have one large white colony and one small clear colony. It is Monday, and you want to perform a gram stain on Wednesday. What would you do? (3pt)4) What two method did you use in lab to obtain pure culture? (2pt)2Bio 240 Microbiology Exam #1 Name _____________Essay: Choose 2 of the following (7 points each)1. Describe the process of pasteurization, why is this processed used, does it leave a food sterile? Who is this process named after?2. Describe in detail how to make a bacteria smear. List the reasons for each step.3. Describe and give evidence for a theory that describes where structures like mitochondria come from.4. Describe the actions of an enzyme. List how they work.5. You want to grow a chemoheterotroph in a defined media. Describe the media that you would you use?6. You have an unknown bacteria that you think causes sudden death in mice. What is the standard method to prove that this organism causes the


View Full Document
Download Bio 240 Microbiology Exam #1
Our administrator received your request to download this document. We will send you the file to your email shortly.
Loading Unlocking...
Login

Join to view Bio 240 Microbiology Exam #1 and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Bio 240 Microbiology Exam #1 2 2 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?