Levels of Organization
What is the smallest unit of life that can perform all life processes?
Cells
What is a limiting factor?
A factor that influences the population size in an ecosystem.
Draw an exponential graph and a logistic graph
Answer on whiteboard
What characteristics of life are described below? There are 2.
A snake needs to find a warm rock to keep its internal temperature stable but the first rock it finds is too hot so it looks for a different heat source.
Homeostasis - Organisms ability to maintain consistent internal temperature.
Respond to Environment - Organisms react to stimuli in their environment
Which of the following would not be considered alive (biotic)?
A) Bug
B) Statue
C) Cucumber
D) Cat
B) Statue
Name the level of organization that includes groups of the same species living in the same area.
Population
Give an example of a biotic limiting factor in an ecosystem.
Food
Predation
Competition (food, mates, shelter)
Disease
Go to Google Doc
C) 30 individuals
What characteristics of life are described below? There are 2.
As people get older, their hair may or may not start to go grey. This depends on whether their parents also went grey as they aged.
Growth and Development - Living organisms must grow and develop over time
Heredity - Genes and physical traits are passed down from parent to offspring
What is a unicellular organism?
An organism that is only one cell. (Eg. bacteria, protozoa)
What do we call the combination of living organisms (biotic) and their physical environment (abiotic)?
Ecosystem
What happens to a population when a limiting factor is removed?
That population will either grow or decline depending on if the limiting factor was positive or negative.
Go to google doc
October
What characteristics of life are described below? There are 2.
Plants have cells called chloroplasts where they make their own food by harnessing energy from the sun using several internal chemical reactions to turn that energy into food.
Composed of cells - All living beings must be composed of living cells
Metabolism - All of the chemical reactions in your body/all living organisms need energy to fuel themselves
Which of the following is an example of growth and development in living organisms?
A) Caterpillar changing into a butterfly
B) Birds laying eggs
C) Getting diagnosed with ADHD just like your mom and siblings
D) Your stomach grumbles when you are hungry
A) This is called metamorphosis and is part of their growth and development.
B) This is reproduction, some species lay eggs to create viable offspring
C) This is heredity, traits that are passed on to offspring
D) This is homeostasis, trying to maintain your internal environment
How does competition between populations and communities influence carrying capacity?
More competition for resources means the overall amount of resources declines. This means there are less resources for all populations involved.
Name one density independent factor and one density dependent factor.
Independent: natural disasters, pollution, climate phenomena (wildfire, drought, etc.)
Dependent: Food, mates, shelter, disease/parasite, etc.
What characteristic of life has to do with the amount of cells and how these cells are structured in an organism?
Cellular Organization