Nature of Science
IV vs DV. What's the deal?
IV: something you specifically change in an experiment; cause/if
DV: the results obtained from changing the IV; effect/then
What is the smallest part of an element that still has the properties of that element?
An atom
What are the 4 types of macromolecules?
Carbs, lipids, proteins, and nucleic acids
Matter
Anything that has mass and takes up space
Why do you need a control group in an experiment?
A control group allows you to compare the results from changing the IV to the norm.
Which is larger: a cell or a tissue?
Tissue
How many cal/gram do each of the macromolecules provide?
Carbs: 4 cal/g
Lipids: 9 cal/g
Proteins: 4 cal/g
Nucleic acids: 0 cal/g
Hydrophilic vs hydrophobic
Create a hypothesis in the correct format based on the following IV and DV:
IV: studying
DV: test scores
If you study, then your test scores will improve.
What are some of the properties of water that make it amazing?
High surface tension, adhesion, cohesion, high specific heat, universal solvent, and less dense as a solid,
What is the order that your body breaks down the macromolecules for energy purposes?
Carbs, lipids, proteins. Never nucleic acids
Monomer vs polymer
single unit/building block; multiple units/building blocks
What is accuracy and precision?
Accuracy: the accepted value; correct answer
Precision: how consistent and close your measurements are to each other
What kinds of bonds hold a water molecule together? What types of bonds hold different water molecules together?
Covalent; hydrogen
What are some of the jobs of proteins?
Enzymes, hormones, structure, transport, antibodies, movement, receptors, energy source
Monosaccharide vs polysaccharide
How are polymers made?
How are polymers broken?
Made: dehydration (removal of water); joins two monomers to make a polymer.
Broke: hydrolysis (addition of water); breaks one polymer into its monomers.
Macromolecule
Large organic unit that is found in every living thing