exam 1 - I pledge on my honor that I have not given or...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
I pledge on my honor that I have not given or received any unauthorized assistance on this examination. Name(Printed)_______________________________ Signature _________________________ Section ____________________________________ My TA's name is ___________________ (1 pt) This exam contains ____ pages and ____ questions (1 pt) Questions 1-30 are worth 2 pts each. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. _____ 1) Which of the following statements regarding microorganisms is false ? A. They constitute the major portion of biomass on earth. B. Most of them cause disease in humans. C. In nature they tend to exist in assemblages called populations. D. They have the ability to reproduce, differentiate and evolve. E. They are among the oldest known life forms on earth. _____ 2) The person whose research formed the foundation of the field of Industrial Microbiology was A) Koch B) Hooke. C) Pasteur. D) van Leeuwenhoek E) Lister _____ 3) In aerobic respiration, the final electron acceptor might be A) Oxygen. B) Glucose. C) ATP. D) water E) more than one answer is correct _____ 4) Which of the following structures is unique to Gram-positive bacteria? A) 80 S ribosome B) Lipoteichoic acid C) Lipopolysaccharide D) Peptidoglycan E) More than one of the above.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 _____ 5) The graph to the right illustrates the role of enzymes in a biological reaction. Which labeled portion of the graph accurately depicts the activation energy needed in the presence of an enzyme? A. B. C. D. E. _____ 6) The tree of life classification scheme for life on earth is based on comparisons of A. cell shape B. metabolic activities C. phenotypic properties of living organisms D. nucleotide sequences of genes encoding ribosomal RNA E. ribosome sizes (“80S” vs. “70S”). _____ 7) Which of the following transport processes requires the expenditure of energy, in order for a bacterium to transport a substance into the cell? A. Facilitated diffusion B. Osmosis C. Group Translocation D. Glycolysis E. More than one of the above choices is correct _____ 8) The structure identified in the image to the right is best described as a A. flagellum B. pilus C. holdfast D. biofilm E. glycocalyx . _____ 9) You have isolated a bacterium from some spoiled food in your refrigerator. After isolating a pure culture of this bacterium, you inoculate it into a tube containing a broth that will support its growth. Which tube best depicts the expected distribution of bacteria within the tube, if the organism is a microaerophile?
Background image of page 2
3 _____ 10) From the data contained in the figure, which molecule is best described as a substrate?
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/28/2011 for the course BSCI 223 taught by Professor Stein during the Spring '08 term at Maryland.

Page1 / 10

exam 1 - I pledge on my honor that I have not given or...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online