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Ray's Stack


True or False: The number of negatively charged electrons moving around an atom’s nucleus equals the number of positively charged protons in the nucleus. True
Sometimes called the atomic mass. It equals the number of protons plus the number of neutrons in the atom’s nu-cleus. Mass Number
the smallest and most numerous structural units that possess and exhibit the basic characteristics of living matter. Cells
—the “powerhouses” of cells that provide energy needed by the cell to carry on day-to-day function-ing, growth, and repair Mitochondria
Set of sacs that provides a “packaging” service to the cell by storing material for future internal use or for export from the cell Golgi Apparatus
A structure made of molecules organized in such a way that it can perform a specific function. Organelle
Combinations of atoms form larger chemical groupings Molecules
The sum total of all the physical and chemical reactions occurring in the body Metabolism
A large and important class of lipids whose molecules have as their main feature the steroid nucleus Steroids
Cholesterol is aArounding every body cell Cholesterol
Often called tissue hormones, are lipids com-posed of a 20-carbon unsaturated fatty acid that contains a 5-carbon ring ( Prostaglandins
Four of these major elements make up about 96% of the material in the human body —carbon, oxygen, hydrogen, and nitrogen—
True or False The total number of electrons in an atom equals the number of protons in its nucleus True
The area where the cells of the epidermis meet the connective tissue cells of the dermis is the dermoepidermal junction (DEJ)
Created by: Origin24
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