Science relies on hypothesis, experimentation, data collection, data analysis, drawing conclusions from data, sharing of data, changing conclusions based on new data, etc.
The food flavor enhancer monosodium glutamate is believed by
some scientists to promote a unique taste sensation known as umami. Umami comes
from glutamate, which is in numerous food such as meat, fish, vegetables and
dairy products. Umami is commonly used as a flavor enhancer in several
cuisines.
Corn, believe it or not, is indeed a type of grass. It has been selectively bred, and genetically engineered to produce large ears of corn.
Mitochondria the "battery " on the cell<span />
I'm pretty sure it's A that isn't true. Cells change over time, if I remember correctly.