Unit 1: Scientific Method
We manipulate our independent variable so that we can measure (see) a change in the dependent variable
Independent: I DO
What are the 3 macromolecules
Carbs (energy)
Protein (build muscle)
Lipids (long term energy)
Animal and plant, in the mitochondria
What is a hypothesis
A testable if then statement based on an observation
What are the grass and human categorized as in the food web below
Food Web:
Sun-> grass -> cow -> human
Plant cells-> Chloroplasts -> chlorophyl
What type of diffusion involves water crossing a cell membrane?
Osmosis
When looking at data, what can we make?
A conclusion
How much energy gets passed on to the next level when a plant/animal is eaten in a food web?
10%
How are photosynthesis and cellular respiration related
Photosynthesis takes in CO2 and releases O2 while cellular respiration takes in O2 and releases CO2
When placed in a hypotonic solution, a cell will...?
Get bigger
Independent: amount of salt each plant got
Dependent:how many plants grew
Controlled:number of seeds, amount of water, amount of sunlight, temperature, amount of soil...
Control Group: no salt
let off as heat
What are 3 of the 5 criteria for something to be considered alive?
1. Made of cells
2. react to its environment
3. Absorb/store energy
4. Reproduce
5. grow and develop
Both plant and animal cells have this feature that controls what goes in and out of them.
Cell membrane
What is a controlled variable
Something that we make sure is the same in order to determine that our manipulated independent variable determines the change in our dependent variable
What macronutrient gives animals most of their energy when they eat something?
What are the products and reactants of Photosynthesis?
What is a difference between a prokaryotic and eukaryotic cell?
eukaryotic have a Nucleus and other membrane bound organelles.
(prokaryote is smaller)