Viruses
Provide an example of a virus
Common cold/flu, measles, Hepatitis, Ebola, Rabies, HIV, SARS, Polio, etc.
Viruses likely developed _________ living cells.
After
What are the 3 domains of life?
Bacteria, Eukaryota, Archaea
What are the 3 shapes of bacteria?
Rod (Bacilli), Sphere (Cocci), Spiral (Spirilla)
What is a superbug?
Bacteria that is resistant to most antibiotics
What kind of virus only attacks bacteria?
Bacteriophage
Why are viruses considered to be parasites?
They rely on host cells to carry out living functions (ex. reproduction, respiration, nutrition)
What domains are prokaryotic?
Bacteria and Archaea
What form of reproduction is Binary Fission, and WHY?
Asexual reproduction - because the daughter cells are from a single organism, and are exact copies of parent cell.
Provide an example of how humans benefit from a relationship with bacteria.
E. coli live in our intestines, help digest food and provide nutrients for us.
What are examples of stressors that can trigger the Lysogenic cycle to enter the Lytic cycle?
ex. temperature, chemicals, lack of food
Viruses must have _______________ in order for natural selection to occur.
Genetic Variation
What features do all prokaryotic cells have?
Cell membrane, cytoplasm, genetic material, ribosomes
What is the think internal wall that bacteria can form to protect their DNA and cytoplasm during stressful conditions?
Endospore
What is the name of the relationship where Bacteria are given a home in exchange for providing nutrients? (Both parties benefit)
Symbiotic Relationship
Which reproductive cycle produces daughter cells with the virus DNA?
Lysogenic Life Cycle
How does a virus successfully find and enter a specific host cell?
What is the difference between organelles found in Prokaryotic cells vs. Eukaryotic cells?
Prokaryotic cells do not have any membrane-bound organelles.
What are the five ways that Bacteria can move?
Flagella, Cilia, Slime Secretions, Spiral Shape, No Movement
What are the three environmental uses of bacteria that we covered in class?
Nitrogen Fixation, Nutrient Flow, Sewage Decomposition
What is a prophage?
Daughter cells containing the Virus DNA during Lysogenic Reproduction
What is the evolutionary arms race?
We must continue to evolve and adapt in order to survive/ compete with other organisms around us. We are all continually evolving in an evolutionary arms race.
Which domains have photosynthetic organisms?
Bacteria (ex. cyanobacteria) and Eukaryota (ex. plants)
What phylum of bacteria are mostly intracellular parasites of animals?
Chlamydias
What factors are contributing to antibiotic resistance? List three
Overuse/Overprescription of Antibiotics
Farming
Lack of Pharmaceutical Company Interest