Bio 211 Quiz 1 practice test answers

Quiz 1 Review:
Ch 1, 4 & 27
Supplemental Instruction
Iowa State University
Bio 211 (4)
1. What is not a characteristic of life?
a. Reproduction
b. Response to the Environment
c. Vertical gene transfer
d. Energy Processing
e. Order
2. _________ is a process in which an organism incorporates genetic material from another
organism without being the offspring of that organism
a. Reductionism
b. homeostasis
c. horizontal gene transfer
d. vertical gene transfer
3. Assemblage of populations of different species is considered to be a ___________
a. Community
b. Ecosystem
c. Population
d. Organization
4. A _____________ is a broad explanation supported by body of evidence, can’t be proven true,
and allows one to make predictions.
a. Hypothesis
b. Systems biology
c. cell theory
d. Theory
5. The Endosymbiont Theory states
a. That the similarities between mitochondria and prokaryotes is an important piece of
evidence for this theory
b. Eukaryotic cells evolved from prokaryotes that engulfed other prokaryotes
c. Ancestors of eukaryotic cells formed a symbiotic relationship with prokaryotes
d. All of the above
6. The complete genetic makeup of a cell is called the __________________
a. genus
b. genome
c. protemome
d. genotype
e. phenotype
7. ______________ is the sum total of all chemical reactions that occur in an organism
a. Photosynthesis
b. Proteomics
c. respiration
d. metabolism
e. none of the above
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8. There are 2 approaches to studying biology. _____________ is reducing complex systems to
simpler components as a way to understand how the system works. The other is _____________
which investigates living organisms in terms of the underlying networks—groups of structural
and functions (rather than their individual molecular components)
a. systems biology/ reductionist approach
b. reductionist approach/ systems biology
c. reductionist approach/genomics
d. systems biology/ proteomics
9. The cell wall of bacteria
a. Does not protect it from the outside environment
b. Is not partly made of peptidoglycan
c. Cannot be kept from forming in the presence of antibiotics
d. Can be stained with Gram staining
e. None of the above
10. Gram staining stains the gram positive bacteria
a. pink
b. green
c. purple
d. yellow
e. gram positive are unable to be stained.
11. Where is a bacterial cell’s DNA found?
a. Mitochondria
b. Nucleus
c. Peroxisome
d. Nucleoid region
e. Capsule
12. Which of the following is present in a prokaryotic cell?
a. mitochondrion
b. ribosome
c. nuclear envelope
d. chloroplast
e. ER
13. Prokaryotes divide by a process called
a. Meiosis
b. Mitosis
c. Binary Fission
d. Cell Fractionation
e. None of the Above
14. ______________ is a type of horizontal gene transfer which DNA is released from a dead
bacterium into the environment and then taken up by another cell
a. conjugation
b. transformation
c. transduction
d. binary fission
e. none of the above
15. During the pulse-chase experiment, osmium tetroxide was used to
a. tag the radioactive amino acids
b. label the membrane that the proteins were passing through
c. illuminate the tagged proteins
d. none of the above
e. all of the above
16. Mitochondrial DNA in a plant cell is expected to be more similar to
a. nuclear DNA
b. eukaryotic DNA
c. cyanobacterial DNA
d. ribosomal DNA
17. Skin cells have (the)___________ genomes and (the)________________ proteomes
a. different/same
b. different/different
c. same/same
d. same/ different
18. a cocci bacteria has a ____________ shape
a. circular
b. rod
c. comma
d. corkscrew
19. ______________ gets their energy from light and their carbon from CO2
a. chemoautotroph
b. chemoheterotroph
c. photoautotroph
d. photoheterotroph
20. What is an obligate anaerobe?
a. a bacteria that can use oxygen but doesn’t necessarily need it (can take or leave
b. a bacteria that is doesn’t use oxygen (poisoned/inactivated by oxygen)
c. doesn’t use oxygen but it not poisoned by it either
d. needs oxygen
21. How can and organism be photosynthetic and a diazotroph (fix nitrogen) at the same time?
a. nif and psa genes are activated at the same time
b. nif and psa genes are activated at different times
c. an organism cannot be photosynthetic and diazotroph at the same time
d. none of the above
22. How do bacteria move?
a. by use of flagella, composed of a filament hook, and motor
b. by means of pili, which helps cells twitch or glide along a surface
c. by using gas vesicles to regulate buoyancy in water bodies
d. all of the above
e. none of the above
23. cyanobacteria play what ecological role?
a. producers
b. consumers
c. decomposers
d. parasites
24. which method does not support genetic diversity
a. transformation
b. transduction
c. conjugation
d. binary fission
e. horizontal gene transfer
f. vertical gene transfer
25. What happens during nitrogen fixation?
a. Nitrogen is converted to CO2 to be used by the organism
b. Atmospheric Nitrogen is converted to ammonia (NH3) to be used by the organism
c. Atmospheric Nitrogen is used up by the organism and CO2 is released
d. none of the above