How can we help?

You can also find more resources in our Help Center.

48 terms

Biology chapter 15 test review

STUDY
PLAY
No many are free living
Are all protozoa parasitic?
Cambrian
Cambrian
Animal life underwent its greatest diversification during the which period?
cyanobacteria
A type of photosynthetic prokaryote that produced oxygen for the prehistoric earth?
archaea
ancient prokaryotes that are often chemosynthetic, unicellular extremophiles
Prokaryotes
Protozoa are thought to have descended from...
Giardia
a flagellate protist that infects the human intestines causing cramps
4.6 bya
When did the earth form?
Cellular slime mold
Give an example of a protist that has an amoeboid stage and slug-like stage
Pre cells
What are packages called that contain non-living RNA and polypeptides contained within membranes ?
Pigment
One way that seaweeds are classified is by the type of _?_ they contain
Endospore
If you were canning your own food, what type/form of prokaryotic cell would be the most difficult to kill?
Oxygen
The absence of which gas in Earth's primitive atmosphere was essential to the origin of life?
abiotic synthesis of organic molecules, abiotic synthesis of polymers, precell formation, origin of self-replicating molecules
four stages of the four stage hypothesis of life's origins
heterotrophic prokaryotes
Which came first - heterotrophic prokaryotes or autotrophic prokaryotes?
biogenesis
If you cannot see the life growing, but it is - is this Spontaneous generation or biogenesis
No oxygen 4 bya
One major difference between the atmosphere of the earth today and that found on Earth 4 billion years ago
Green algae
Which protists are most plantlike?
Archaea
What prokaryotes are also known as extremophiles because the live in harsh environments, similar to ancient earth
Archaea and Bacteria
What are the two domains of prokaryotes?
photosynthesis
All algae are capable of undergoing what process?
amoeba
Give an example of a protist that moves using pseudopodia
chemosynthesis
The production of organic molecules by oxidation of inorganic molecules
plasmodium
What type of protist causes malaria?
plants and fungi
What kinds of organisms were the first to colonize land?
mitochondria and chloroplasts
The existence of what organelles is explained by the endosymbiosis hypothesis?
volvox
Give an example of a protist that is a colonial algae
Evaporation of monomer solution from hot rocks, clay or sand
Under what conditions can monomers spontaneously form polymers?
Methane, ammonia, nitrogen
Before life arose on this planet, what gases were present in the atmosphere?
paramecium
Give an example of a protist that moves using cilia
Amino acids, sugars, nucleotides, ATP
When testing the first stage of the four stage origin of life hypothesis , what kinds of organic compounds were made?
spontaneous generation
The abiotic origin of life is referred to as...
Abiotic synthesis of monomers
What was the first stage of the process that led to the abiotic origin of life?
diatoms
Give an example of protists that have a glassy cell wall containing silica.
They decompose organic matter, make nitrogen available to organisms
What are some ecological benefits of bacteria?
archaea
Which prokaryotic group is most closely related to eukaryotes?
methanogens
What are anaerobic bacteria that live in guts of animals?
cell wall
What name is given to the rigid structure that surrounds and supports a prokayotic cell?
foram
Give an example of a protist that has both a pseudopodia and a shell
binary fission
Prokaryotes reproduce by means of...
Chemoautotroph
You discover a prokaryote that can make its own food in the absence of light. Nutritionally, you would classify this protist as a..
endospore
What protects a bacterium from boiling and freezing conditions?
photoautotroph
What type of organism makes its own food use light?
protists
The simplest eukaryotes are...
decomposers treat raw sewage, prokaryotes clean up oil spills and can be genetically engineered to degrade oil more rapidly, they can clean up mines that are laced with poison
Give examples of bioremediation.
apicomplexans
Which protozoan group consists solely of parasitic forms?
dinoflagellates
What group of protists is responsible for toxic red tides?
algae
What may be unicellular or multicellular and are all photosynthetic
RNA is capable of self-replication, DNA is not
Why is RNA thought to have been the first genetic material?