Answer only if you know what everything means:
I'm trying to think of Biology IA for IB.
It needs to somehow relate to cardiology or anything with heart.

It can't be expensive. Less than or equal to 50$.
Must not be using other animals or humans.

A simple lab experiment that is cheap, high level, and somehow related to the heart.

supercell thunderstorms are perhaps the most violent of all thunderstorm types, and are capable of producing damaging winds, large hail, and weak-to-violent tornadoes

the offspring would all be white. if the parents are both white flowers then they have the genotype rr, which when crossed results in an all white punnet square.

the cells uses some of the atoms of the glucose molecules to atp molecules. the atoms of the glucose molecules will then be converted into energy which will be eventually stored in atp. the energy produced which are stored in atp are coming from the glucose’s chemical bonds.