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49 Cards in this Set
- Front
- Back
Are viruses considered alive? |
No |
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Which two scientists conducted experiments that demonstrated the DNA is the genetic material of bacteriophages? |
Hershey and Martha |
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What does the envelope of a flu virus help the virus do? |
Envelope helps enter and leave the cell. |
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Where inside the host cell does the herpes virus reproduce? |
Nucleus |
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Can you cure plants of virus disease? |
No |
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Can humans acquire virus diseases from animals? |
Yes, almost all viruses have effected them. |
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What kind of virus is HIV? |
Retrovirus |
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What enzyme does HIV use the synthesize DNA from RNA? |
Reverse transcriptase |
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What type of cells does HIV infect and damage? |
Infects white blood cells |
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What is the main difference between a prokaryote and a eukaryote? |
Nucleus for prokaryotes, no nucleus for eukaryotes. |
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What is the nucleoid region of a prokaryote? |
Contains cell DNA. |
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How much smaller are prokaryotes compared to eukaryotes? |
10x smaller. |
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Are all prokaryotes very similar or very different? |
Very different |
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What is the name of the substance that makes up the cell walls of bacteria which archaea do not have? |
Peptidoglycan |
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What are some types of evidence that archaea and eukaryotes are more closely related than archaea are to bacteria? |
More in common with humans |
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What are two domains of prokaryotes? |
Bacteria and Archaea |
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What would be the shape name for pairs of rod-shaped bacteria? |
Oval shape for rods |
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What is the name for curved or comma shaped bacteria? |
Vibrios are J shaped |
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What is the term for helical or spiral shaped bacteria? |
Cocci |
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What are the three functions of the bacterial cell wall? |
Maintain shape, no bursting, and good for protection |
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What is the function of the pili? |
Help adhension on bacteria and provide links during conjugation |
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What is the function of the capsule? |
The capsule can protect cells from engulfment by eukaryotic cells, such as macrophages. |
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What is the function of the flagella? |
Movement |
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Whose genome is bigger, prokaryotes or eukaryotes? |
Eukaryotes
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Can endospores survive boiling water? |
Yes |
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What nutritional group of bacteria get both their energy and carbon from organic molecules and is the largest group of bacteria? |
Chemoheterotroph |
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What short, thin appendages help prokaryotes adhere to surfaces? |
Pili |
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Where do chemoautrophic bacteria get their carbon and energy from? |
CO2 from air and energy from inorganic compounds |
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Do heterotrophs get their carbon from organic or inorganic compounds? |
Organic |
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Name the three main groups of Archaea? |
Extreme halophiles, extreme thermophiles, and methanogens |
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Characteristics of halophiles, thermophiles, and methanogens |
Salty, extreme hot waters, or methanogens make their own energy. |
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What are cyanobacteria? |
Photosynthesize in a plantlike manner |
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What are actinomycetes? |
Live in soil and decomposer like fungus |
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Are methanogens in the domain bacteria or domain archaea? |
Domain archaea |
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What is the most common sexually transmitted disease in the U.S.? |
Chlamydia |
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What does salmonella cause? |
Food poisoning and typho fever? |
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What type of bacterial disease causes a large, bullseye-shaped rash? |
Lyme disease! |
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What are some things that have reduced bacterial diseases? |
Sanitation/Antibiotics/Education |
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Can you get anthrax by simply touching it with the skin? |
Break in the skin or inhale it |
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How do cyanobacteria help plants? |
Fixing nitrogen |
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What group of organisms have had the greatest impact on the environment more than all other forms of life? |
Bacteria |
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What is transformation? |
Uptake of foreign DNA from environment |
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What is transduction? |
Transfer of bacterial genes by phage |
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How did Frederick Griffth go about proving transformation? |
Transformation |
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What is the advantage of conjugation, transduction, and transformation? |
All increasing genetic information |
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Spreading a computer virus by using emails is most like which of the processes above? |
Transduction |
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How do bacteria pass on genes for antibiotic resistance? |
Plasmid |
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What are the requirements for a functional F factor? |
Carry genes and build organ of replication and pass genes. |
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What human activities have contributed to an increase in the number of bacteria having R plasmids? |
Over use of antibiotics in medicine and agriculture |