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34 Cards in this Set
- Front
- Back
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______________ can be found in all 3 domains |
microbiota |
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Being small is not a _____________ character |
taxonomic |
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First 2 billion years of life, all life was _____________ organisms |
unicellular, prokaryotic |
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We carry about _____________ microbes that aren't part of us. |
500 trillion |
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We have about _____________ cells of our own. |
50 trillion |
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a microbe can be described as... |
too small to see clearly without a microscope |
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The prokaryotic size range is about _____________ micrometers. |
0.2-1.0 |
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Unicellular eukaryotes range in size _____________. |
10-100 micrometers |
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a micrometer is _____________ of a meter |
1 / 1,000,000 |
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The period at the end of a sentence is about _____________ micrometers. |
1,000 |
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The biggest prokaryote is bigger than some of the smallest _____________ |
eukaryotes |
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coccus = _____________ |
round shaped |
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bacillus = _____________ |
rod shaped |
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What is the Eukaryotic cell creation theory? |
One prokaryotic cell engulfed another prokaryotic cell and the eaten cell survived. |
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What does the theory of endosymbiosis explain? |
How eukaryotic cells evolved from prokaryotic cells |
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In a human nucleus there are _____________ chromosomes and the DNA is _____________ |
23
linear |
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Bacteria have _____________ genomes. |
circular |
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Mitochondrion genome comes from the _____________. |
mother's egg |
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Plant cells came from a bacteria that consumed a _____________. |
photosynthetic bacteria |
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Plants have a nuclear genome with _____________ chromosomes in the nucleus and _____________ in the chloroplasts. |
linear
circular genomes |
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Viruses are _____________ things that require _____________ things to replicate. |
non-living
living |
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There are viruses that even infect _____________. |
prokaryotes |
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What is a theory of virus beginnings? |
Cells that became very specialized at infiltrating cells and using them for their own benefit. They came to be in the prebiotic soup |
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Viruses are not living organisms because they don't have _____________. |
all the characteristics of living organisms |
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What is the size of typical viruses? |
0.05 - 0.2 micrometers |
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Viruses typically have host _____________. |
specificity |
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What are the 3 common parts of a virus? |
Genome Capsid Envelope |
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What is a virus genome? |
the genetic information. Can be either single-stranded RNA or double-stranded DNA |
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What is a virus capsid? |
a viral protein coat that surrounds and protects genome. |
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What is a virus envelope? |
membrane (phospholipid bilayer) which surrounds the capsid. |
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Some viruses like the flu can infect _____________. |
multiple organisms |
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What is an example of a virus with ssRNA? |
HIV Influenza virus |
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What is an example of a virus with dsDNA? |
Varicella zoster virus |
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The chicken pox has evolved to hide _____________. |
in your nervous system |
