Scientific Variables
What is the term for the variable that is measured in an experiment?
Dependent variable
What macromolecule is primarily used for quick energy?
Carbohydrates
What does Hydrophobic mean?
Fear of Water
What is the purpose of a funnel?
To transfer liquids into small openings or hold filter paper.
What is an observation?
Description using your 5 senses.
In an experiment, what is manipulated to observe its effects?
Independent variable
Which macromolecule is made of amino acids?
Proteins
What is the term for the cohesive property of water?
Cohesion
What is the shape of a flask like?
Narrow mouth and triangular base
Which Macromolecule is never broken down for energy?
Nucleic Acids
What kind of variable must be kept constant during an experiment?
Constant variable
What are the major types of macromolecules?
Carbohydrates, lipids, proteins, nucleic acids
What allows insects to walk on water?
Surface Tension
What does accurate mean?
On the bullseye of the target, on the actual value
What are lipids? Give an example of it in the cell.
Fats/Phospholipids
What is a hypothesis?
A proposed explanation for a phenomenon that can be tested.
What macromolecule is involved in muscle contractions?
Proteins
Why does ice float on water?
Ice is less dense than liquid water.
What does precision mean?
Being consistent, measurements are close together
What is known as the universal ________________.
Solvent
What is the difference between a control group and an experimental group?
The control group does not receive the treatment, while the experimental group does.
Which macromolecule is used for storing genetic information?
Nucleic acids
What is the difference between polar and nonpolar. Provide an example of each.
Polar- can dissolve in water ex. salt
Nonpolar- does not dissolve in water ex. oil
What tool is used to measure precisely?
Graduated Cylinder
Write a hypothesis: IV- amount of caffeine DV- breathing rate of goldfish
If the amount of caffeine is high, then the breathing rate of goldfish will be as well.