Scientific Method
What is a constant?
a quantity that does not change (ex. test being done for 1 week).
Define homeostasis
Maintaining a stable internal balance or condition.
The most basic form of energy is?
ATP
Capillary action is....
When water travels upward against gravity
Why is NH4 considered a compound
2 uppercase letters or elements
Define the Independent Variable?
Define the Dependent Variable?
IV = variable that is changed/controlled in a scientific experiment to test the effects on the dependent variable.
DV = Variable being measured based on the IV
Why do organisms and species need to adapt to their environment?
Survival of the fittest.
Cells are organized into ___________
Tissues
How many atoms does CH4 have?
5 atoms
Define Mass and Weight
Weight = pull of gravity on an object
Define: Control Group vs. Experimental Group
Control Group - group that does NOT receive the treatment
Experimental Group - receives the treatment whose effect researchers wish to study,
Chemical messengers are called _________
hormones
DNA and RNA get translated into ________
proteins
Define: Ionic vs. Covalent Bonds
Ionic - transfer of electrons
Covalent - sharing electrons
What are the charges of protons, neutrons and electrons?
p = positive
n = Neutral
e= negative
Define a hypothesis.
An educated guess in if then bc format
If IV Then DV Bc
Biotic is another term for?
Living things
Give an example of response to stimulus. Explain which part is the stimulus and which is the response.
A fire alarm goes off and you scream
Give and example of Adhesion and Cohesion
Adhesion - water sticking to sides of beaker
Cohesion - a puddle of water
Compare and Contrast and Element vs a Compound.
Elements. pure substance that cannot be broken down
Compounds - elements combined together
Seen in a chem rxn
Alex wanted to find out what toothpaste made teeth the cleanest. Everyday she brushed her teeth with a different product and then took a plaque test to see how much plaque was left. She used Crest, Colgate, Close-up, and water.
Independent Variable (IV):
Dependent Variable (DV):
Experimental Group:
IV: Type of toothpaste
DV: Amount of plaque
EG: Crest, Colgate and Closeup groups
Give an example of homeostasis
It is hot outside and you sweat - your body is dropping your temperature back to normal (around 98 degrees)
What are the levels of organization in complex living things?
Cell, Tissues, Organs, Organ System, Organism
When water is neutral what two items should equal one another?
electrons and protons
96 % of the mass of an organism is composed of what 4 elements?
O, C, H and N
CJ wanted to see if listening to music would make the basketball players make more baskets. On day one, he didn’t play any music and counted how many baskets they could make in 10 minutes. On day 2, he played rap music and counted the baskets, and on day 3, he played classical music and counted the baskets.
IV: Type of music
DV: Amount of baskets
Control Group: No music being played
What is the formula for evolution?
change/time
Draw out what budding looks like and explain
Budding = 1 parent that splits into 2 identical organisms
Ba has how many:
Protons
Neutrons
Electrons
Protons = 56
Neutrons = 81
Electrons = 56
O has how many:
Protons
Neutrons
Electrons
Protons: 8
Neutrons: 8
Electrons: 8