Characteristics of Life
Characteristics of Life
Bacteria
Viruses
Bacteria & Viruses
100
How many characteristics of life are there?
Eight.
100
What is the basic unit of structure and function of all living things?
A cell.
100
What can be used to kill bacterial infections?
Antibiotics.
100
What is used to prevent viral infections?
Vaccines.
100
Is a virus considered alive? List three reasons to support your claim.
No.
-It cannot reproduce on its own
-It is not composed of cells
-It cannot maintain homeostasis
200
What are traits called when they are passed from parents to offspring?
Heritable.
200
List any three commonalities between a bacterium and a whale.
They both...
-Contain at least one cell
-Have a metabolism
-Can reproduce
-Can grow and develop
-Contains DNA
-Respond to environmental stimuli
-Maintain homeostasis
200
Is this a virus or a bacterium?
Bacteria.
200
Is this a virus or bacterium?
Virus.
200
What is the theory that all diseases are a result of microorganisms within the body?
Germ Theory.
300
What is the difference between growing/developing and evolution?
Growing/developing happens within one organism's lifespan while evolution happens within a species over many years.
300
What is the difference between asexual and sexual reproduction?
Asexual reproduction is when the organism makes a copy of itself while sexual reproduction is when two organisms combine their genetic material to create a new life.
300
Is bacteria considered alive? List 3 reasons to support your answer.
Yes.
-They are made up of 1 cell
-They have a metabolism
-They can reproduce on their own
-They can grow and develop
300
What is the protein shell covering the outside of a virus called?
Capsid.
300
What is the basic (3-part) structure of a virus?
Nucleic acid, capsid, and viral envelopes.
400
What is the biochemical process of combining nutrients with oxygen to release energy into your body called?
Metabolism.
400
What is the difference between eukaryotic and prokaryotic cells?
Eukaryotic cells contain a nucleus and membrane bound organelles while prokaryotic cells do not contain a nucleus or membrane bound organelles.
400
What is a living, prokaryotic cell that has a metabolism, is free moving, and can reproduce?
Bacteria.
400
What is the Lysogenic Cycle and does the host experience symptoms during this phase?
When the virus uses the host cell to replicate it's DNA to make new copies. The host experiences no symptoms.
400
List an example of a viral infection.
-HIV
-Flu
-Ebola
-Herpes
500
What is it called when your body maintains a stable internal environment despite environmental changes?
Homeostasis.
500
List all 8 characteristics something must have to be considered alive.
*Hint: Think of the mnemonic device*
1. DNA
2. Grow and Develop
3. Complex Chemistry (Metabolism)
4. Homeostasis
5. Respond to Stimuli
6. Reproduce
7. Evolve
8. Cells (1 or more)
500
What is an example of a bacterial infection?
-Strep throat
-Bacterial meningitis
-Tuberculosis
-Some STIs
500
What is the Lytic Cycle and does the host experience any symptoms during this phase?
When the host cell builds new copies of the virus which are released and infect other cells. The host begins experiencing symptoms and may die.
500
What is a virus that parasitizes a bacterium by infecting it and reproducing inside of it called?
Bacteriophage.