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Practice Exam 1 - Principles of Biology I | BIOL 211, Exams of Biology

Material Type: Exam; Professor: Serb; Class: PRIN OF BIOLOGY I; Subject: BIOLOGY; University: Iowa State University; Term: Spring 2009;

Typology: Exams

Pre 2010

Uploaded on 09/02/2009

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PRACTICE EXAM—UNIT 1
1. Name the correct order of appearance on earth of the following:
a. Atmospheric oxygen, prokaryotes, land plants, eukaryotes
b. Prokaryotes, land plants, Atmospheric oxygen, eukaryotes
c. Eukaryotes, atmospheric oxygen, prokaryotes, land plants
d. Prokaryotes, Atmospheric oxygen, eukaryotes, land plants
e. Atmospheric oxygen, prokaryotes, eukaryotes, land plants
2. A theory is _____.
a. a poorly supported idea that has little backing but might be correct
b. a well-supported concept that has broad explanatory power
c. the same thing as a hypothesis
d. not correct unless it is several years old
e. a concept that, once established in the scientific literature, can be modified but never
rejected, even when new scientific methods produce data that don't fit
3. A hypothesis must be testable and falsifiable to be scientifically valid. Being testable and
falsifiable means that _____.
a. some conceivable observation or experiment could reveal whether a given hypothesis is
correct or incorrect
b. the hypothesis has been proved wrong
c. there must be several options in the hypothesis to choose from, one of which is correct
d. if the hypothesis is not correct, the experiment was a failure
4. Science itself is not capable of _____.
a. determining the physical causes for physical phenomena or explaining naturally
occurring events
b. being reproduced or falsified
c. formulating testable hypotheses in seeking natural causes for natural phenomena
d. addressing questions of ethical dilemmas
e. being an active and dynamic process
5. Taxonomy is ___.
a. A hierarchical classification of organisms.
b. A classification that reflects historical relationships.
c. A division of organisms based on similar sets of characteristics
d. a and c
e. All of the above
6. The origin of organelles for eukaryotes was proposed by the
a. Horizontal gene transfer
b. Endosymbiont theory
c. Plasmid theory
d. Greek mythology relating to the chimera
7. Internal membranes in eukaryotes were said to have developed
a. From infoldings of the ancestral prokaryotic plasma membrane
b. From the cytoskeleton of bacteria
c. From internal parasites
d. From seeds
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PRACTICE EXAM—UNIT 1

  1. Name the correct order of appearance on earth of the following: a. Atmospheric oxygen, prokaryotes, land plants, eukaryotes b. Prokaryotes, land plants, Atmospheric oxygen, eukaryotes c. Eukaryotes, atmospheric oxygen, prokaryotes, land plants d. Prokaryotes, Atmospheric oxygen, eukaryotes, land plants e. Atmospheric oxygen, prokaryotes, eukaryotes, land plants
  2. A theory is _____. a. a poorly supported idea that has little backing but might be correct b. a well-supported concept that has broad explanatory power c. the same thing as a hypothesis d. not correct unless it is several years old e. a concept that, once established in the scientific literature, can be modified but never rejected, even when new scientific methods produce data that don't fit
  3. A hypothesis must be testable and falsifiable to be scientifically valid. Being testable and falsifiable means that _____. a. some conceivable observation or experiment could reveal whether a given hypothesis is correct or incorrect b. the hypothesis has been proved wrong c. there must be several options in the hypothesis to choose from, one of which is correct d. if the hypothesis is not correct, the experiment was a failure
  4. Science itself is not capable of _____. a. determining the physical causes for physical phenomena or explaining naturally occurring events b. being reproduced or falsified c. formulating testable hypotheses in seeking natural causes for natural phenomena d. addressing questions of ethical dilemmas e. being an active and dynamic process
  5. Taxonomy is ___. a. A hierarchical classification of organisms. b. A classification that reflects historical relationships. c. A division of organisms based on similar sets of characteristics d. a and c e. All of the above
  6. The origin of organelles for eukaryotes was proposed by the a. Horizontal gene transfer b. Endosymbiont theory c. Plasmid theory d. Greek mythology relating to the chimera
  7. Internal membranes in eukaryotes were said to have developed a. From infoldings of the ancestral prokaryotic plasma membrane b. From the cytoskeleton of bacteria c. From internal parasites d. From seeds
  1. Prokaryotes are ___. a. Examples of protists b. Classified into one domain c. Important because they changed the earth’s atmosphere by creating CO 2 d. Unable to move e. Important decomposers
  2. Which of the following statements about the Endosymbiont Theory is false? a. Cells are genetic chimera b. The similarities between mitochondria and prokaryotes are an important piece of evidence for this theory c. Eukaryotic cells evolved from prokaryotes that engulfed “endosymbionts” d. Ancestors of eukaryotic cells formed a symbiotic relationship with prokaryotes which then became a dependent relationship e. None of the above (What must the larger prokaryote in this theory have had in order for the theory to hold true? __________________________________________)
  3. Gram-_________ bacteria have lipopolysaccharides on their cell wall and _________ peptidoglycan than the other type of Gram bacteria, meaning they are _____________ resistant to antibiotics. a. Negative…more…more b. Negative…less…more c. Positive…less…less d. Positive…more…more e. None of the above (How do antibiotics kill bacteria? __________________________________________________)
  4. What is true about a clade? a. It is a group of unrelated organisms. b. It is a group of species with a common ancestor. c. It is a hypothesis about a group of species. d. b and c e. All of the above
  5. Eukaryotic cells, but not bacterial cells, possess _____. a. Plasmids b. A nucleoid with a circular chromosome c. Membrane-enclosed organelles d. Cell walls e. All of the above
  6. Prokaryotes a. Are sometimes able to move b. Have internal organelles c. Have no DNA d. Reproduce slowly e. None of the above
  1. What were some problems that the first land plants probably encountered in moving to land from water? Some benefits? _______________________________________________________

  1. Which of the following is not evidence that charophyceans are the closest algal relatives of plants? a. similar sperm structure b. apical meristems c. similarities in cell wall formation during cell division (phragmoplast) d. genetic similarities in some organelles e. similarities in a rose-shaped complex that synthesizes cellulose
  2. Which of the following is not common to all phyla of land plants? a. apical meristem b. alternation of generations c. dependent embryo d. xylem and phloem e. multicellular gametangia
  3. What is the advantage of some land plants having a branched sporophyte? _______________

  1. Ferns have _______, while bryophytes do not have this structure. a. Sporangia b. Dominate gametophytes c. Seeds d. Pollen e. Phloem
  2. Which of the following is not common to all phyla of vascular plants? a. the development of seeds b. alternation of generations c. dominance of the diploid (sporophyte) generation d. xylem and phloem e. sporophyte that is independent of the gametophyte
  3. Vascular tissue is useful to a plant because ________________________________________

  1. Bryophytes, like ferns, are limited mostly to moist environments because _____. a. their pollen is carried by water b. they lack vascular tissue c. they have swimming sperm d. their seeds do not store water
  2. Ferns are ecologically important because: a. They have antibacterial properties b. They store 400 billion tons of organic carbon c. They feed 80% of the human population d. They are used for fossil fuels
  1. In the land plant life cycle _____ cells within a sporangium undergo _____ to produce _____ spores. a. diploid ... meiosis ... haploid b. haploid ... mitosis ... haploid c. diploid ... mitosis ... diploid d. diploid ... mitosis ... haploid e. haploid ... meiosis ... haploid
  2. In the land plant life cycle _____ cells within a gametangia undergo _____ to produce _____ gametes. a. diploid ... meiosis ... haploid b. haploid ... mitosis ... haploid c. diploid ... mitosis ... diploid d. diploid ... mitosis ... haploid e. haploid ... meiosis ... haploid
  3. Food for the embryo in seeds of gymnosperms comes from ______, while the seed coat comes from ______. a. Integuments, male gametophyte b. Male gametophyte, adult sporophyte c. Adult sporophyte, female gametophyte d. Female gametophyte, adult sporophyte
  4. What happened to the size of the gametophyte throughout the history of land plants?

  1. In gymnosperms, how is the male gametophyte dispersed? ____________________________ In what structure is the male gametophyte found? ______________________________________
  2. What’s the difference between pollination and fertilization? ___________________________


  1. Cycads, which are dioecious, a. Have either male or female parts on a single tree b. Have both male and female parts on a single tree c. Make one type of spore d. Make two types of spores e. None of the above
  2. How are seeds more beneficial than spores? _______________________________________

  1. Seeds contain a. An embryo b. A store of food c. A resistant coat d. All of the above