Variables
Dependent variable
affected by other factors
What is DNA
deoxyribonucleic acid, double helix, genetic material
Triglycerides
The main form of stored energy in animals
What is matter
Anything that has mass and takes up space
Activation energy
energy required to start a chemical reaction
Independent variable
hanged by the experimenter
What is RNA
ribonucleic acid, single side, helps make proteins
Phospholipids
The major components of cell membranes
Chemical substances
Have a definite make up
Metabolism
sum of all the reactions within an organism
Constant variable
Unchanged in the experiment
What does nucleic acids contain
Sugar, phosphate and nitrogen base
Steroids
Serve as chemical messengers and have other roles
Element
All the same type of atom
Catabolic reactions
exothermic reactions which break down large
Control variable
Used for comparison
What is nucleic acids
Complex organic substance present in living cells
Saturated fats
Contains maximum number of hydrogens, straight chains, solid at room temp, found in animals
Compound
2+ elements bonded together
Anabolic reactions
endothermic reactions which build up large molecules and require energy.
What is the order of a science experiment
Observation > Question > Hypothesis > Experiment > Analysis > Conclusion
What does Adrenalin pair with in DNA
Thymine
Unsaturated fatty acids
have a double bond between carbons, bent or curved shape, liquids at room temp, found in plants
Polypeptide
long chains of amino acids
Enzyme
speed up reactions in cells, without them most life would die.