Characteristics of Living Things
Define Unicellular and Multicellular Organisms
Unicellular- made of one cells; carries out all the functions necessary to stay alive.
Multicellular- trillions of cells work together to carry out the functions of an organism.
Living or nonliving?
Living
Living or nonliving?
Nonliving
Bacteria or virus
Bacteria
Bacteria or Virus? (Be specific!)
Rod-shaped bacteria
List 3 chemicals of life.
DNA
Water
Carbohydrates (Carbs)
Proteins
Lipids (Fats)
What shapes? (All)
round, rod, spiral
What shapes? (4+)
round, brick-like, thread-like, bullet, robot-like
Outbreak source and cause
Water pump on Broad Street. Bacteria from a household sewer leaked into the waterway.
How does it spread to other people?
contaminated food or water
not washing hands after using the toilet
What two things can living organisms get energy from?
Sunlight and consuming other living organisms
Reproduction
Binary Fission (asexual reproduction)
A cell copies its DNA and splits itself into two identical cells
Reproduction
Virus attaches to a host cell, injects the host cell with genetic material from the virus. The virus takes control of the host cells and forces it to copy its genetic material(DNA). The host cell will burst and spread the virus to the cells around it.
Butcher's name and his crime
Gideon Slye, accused of selling spoiled meat. Later found to be innocent.
How many people got Typhoid Fever because of Mary Mallon? How many died?
47
3
Define Binary Fission
One cell copies its DNA and splits into two identical cells.
Disease
Medicine
Choloera, Strep throat, E.coli, Typhoid Fever
Antibiotics
Disease
Medicine
Cold, flu, covid
Vaccine
Investigator's name?
Dr. John Snow
How long was Mary quarantined on North Brother Island?
26 years, until she died
Name the 6 Characteristics of living things
1. Cellular Organization
2. The Chemicals of Life
3. Growth and Development
4. Response to Surroundings
5. Reproduction
6. Energy Use
2 similarities with viruses
microorganism
pathogen
contain genetic material
Structure: Made of ______
Genetic material (DNA) surrounded by a protein coat
Who was Matilda Wright's great nephew and why was he important?
Thomas Sutterfield: He was a lawyer. He won a case defending the Butcher who was accused of selling spoiled meat.
What is another term for "healthy carrier?"
Asymptomatic carrier