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15 questions
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- Multiple ChoicePlease save your changes before editing any questions.
Bacteria, along with having its main chromosome, has small circular pieces of DNA. What are these small pieces of DNA called?
Plasmids
Nucleoid
Ribosome
Flagellum
- Multiple ChoicePlease save your changes before editing any questions.
The prefix "halo" such as in halophile most likely means...
Salt
High temperatures
Self-serving
Gram
- Multiple ChoicePlease save your changes before editing any questions.
What kind of Archaea would you find in places such as volcanoes and hot vents on the ocean floor?
Thermophiles
Halophiles
Cyanobacteria
Plasmophiles
Volcanophiles
- Multiple ChoicePlease save your changes before editing any questions.
What does the suffix "troph" indicate?
How a creature acquires its energy
What kind of temperature a creature prefers
Whether its gram positive or negative
Whether its an Archaea or not
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is not a characteristic that defines an Archaea?
Live in extreme environments
Have cell walls with weird lipid compositions
Ancient prokaryotes
Has a nucleolus
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following terms describes this group of creatures: slime molds, diatoms, red algae.
Protists
Archaea
Bacteria
Methanogens
- Multiple ChoicePlease save your changes before editing any questions.
Can bacteria be photosynthetic?
Yes, like cyanobacteria
No, there are no phototrophic bacteria
- Multiple ChoicePlease save your changes before editing any questions.
How do heterotrophs get their energy?
By breaking down/eating other organisms
By breaking down chemicals such as methane
By doing photosynthesis
By creating energy via the power of meditation
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following groups of organisms are all chemotrophs?
Cyanobacteria
Methanogens
Slime molds
Red algae
- Multiple ChoicePlease save your changes before editing any questions.
The Dead Sea is a large salt lake bording Jordan and Israel. It has a salt concentration of 34.2%, which is too hypertonic for most life. What life might still survive and thrive there?
Halophiles
Thermophiles
Heterotrophs
Cyanobacteria
- Multiple ChoicePlease save your changes before editing any questions.
What would cyanobacteria be characterized as?
Phototrophs
Chemotrophs
Heterotrophs
Tealotroph
- Multiple ChoicePlease save your changes before editing any questions.
What is the difference between Gram positive bacteria and Gram negative bacteria?
How their cell walls are set-up
How long their flagellas are
Whether they have a nucleus or not
The rRNA composition of their ribosomes
- Multiple ChoicePlease save your changes before editing any questions.
Peptidoglycan is the main structural compound found in the cell walls of what kinds of creatures?
Slime molds
Bacteria
Algae
Archaea
- Multiple ChoicePlease save your changes before editing any questions.
How would a scientist describe the cell walls of Archaea?
Weird compositions of lipids
95% peptidoglycan
Mostly composed of chitin
Does not have a cell wall
- Multiple ChoicePlease save your changes before editing any questions.
Plasmids are often used by scientists who are messing with the genetics of bacteria. They use the plasmids as a "delivery mechanism." Bacteria will happily "take up" the plasmid and integrate it into their own genome. What is the plasmid "delivering"?
New DNA
Monosaccharides
Halogens