Strawberry DNA Extraction
This household liquid is used at the very end of the lab to make the DNA clump together and become visible.
isopropyl alcohol (or rubbing alcohol)
Adding salt to the ice lowers this specific temperature trait of water, allowing the cream to freeze.
Freezing point
The sudden, dramatic color change that signals the reaction is complete turns the liquid into this dark color.
Black/purple
This piece of personal protective equipment (PPE) must stay over your eyes the entire time a lab is active.
Goggles
This state of matter has a definite volume but takes the shape of whatever container you pour it into.
Liquid
This is the massive macromolecule we are actually pulling out of the strawberry cells.
Deoxyribose Nucleic Acid (DNA)
This is the specific chemical compound (commonly used in food) that we mix with the ice.
NaCl
Sodium Chloride
Salt
This common kitchen pantry item acts as the indicator in this lab, changing color when it interacts with iodine
Corn starch
If a chemical splashes into your eyes, you must use this station for a full 15 to 20 minutes.
Eyewash station
When water boils on a stove, it transitions from a liquid to this state of matter.
Gas or steam
We use dish soap in the extraction buffer to break down this specific layer of the strawberry cells
Cell membrane
Ice cream making is an example of this type of process, where heat energy is transferred out of the cream and into the ice.
Exothermic
Which ingredient made the iodine disappear? (Amber/gold to clear)
Vitamin C
When smelling a chemical or reaction, you should never sniff it directly; instead, you should use this hand motion.
Wafting
Ice, water, and steam are all different states of this same common molecule.
Water (H2O)
Because strawberries have eight copies of each chromosome instead of two, they are described by this genetic term.
Hint: humans are diploid because they have 2 copies of each chromosome
Octoploid
Liquid milk turning into solid ice cream represents this specific type of change, because no new chemical substances are created.
Physical change
Which chemical or household product ate up the vitamin c and allowed the liquid to go from clear to yellow again.
Hydrogen peroxide
This type of footwear is strictly forbidden on lab days to protect your feet from spills and broken glass.
Open toed
This is the phase change that happens when a liquid gets cold enough to turn into a solid.
Ice/Freezing
Plants like strawberries have a rigid, outer layer made of cellulose that animal cells lack, requiring us to mechanically smash the fruit to break through this touch structural barrier.
HINT: Animal cells have only a cell membrane, plant cells have an extra layer.
Cell wall
What were the two most used toppings?
Caramel & chocolate sprinkles
Once the starch is added, can we remove it?
During our demonstration, no. However it could be removed with heat.
If a glass beaker breaks during an experiment, this is the very first thing a student should do.
Tell the teacher
At what temperature does water freeze at in Celsius or Fahrenheit
32°F (Fahrenheit) or 0°C (Celsius)