True. isotopes of uranium i.e U 235 is used as nuclear fuel in power plants
Answer:
The scientist is studying oxygen which can also be found in protien. oxygen is the element which makes up to 65% of human body mass. It is also found in proteins inside the body.
I believe the answer to your question is C, correct me if i'm wrong :)
Answer:
The majority of living things are made up of various types of cells that are each specialized to execute a specific purpose. Because certain enzymes, also known as proteins, play a big role in biochemical function, distinct sets of genes must be turned on and off in different cell types. This is how cells differ from one another.
The answer is Mitochondria
Hope that helps! :)