Its 20 days prior to menstrual period begins
Answer:
organisms can have only one or many cells
Answer: Proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs.
Explanation:
What Is Main Purpose of Protein in Living Things?
Muscle Mass. The building blocks of proteins are amino acids.
Cell Formation. Every cell in your body has some protein in it.
Tissue Maintenance and Repair. You need protein to help your body repair cells and create new ones.
Enzymes and Hormones.
Energy Source.
Some 60 chemical elements are found in the body, but what all of them are doing there is still unknown. Roughly 96 percent of the mass of the human body is made up of just four elements: oxygen, carbon, hydrogen and nitrogen, with a lot of that in the form of water.
Answer:
B I think. let me know if I'm right because I might be wrong.
