what is the human body made of cells

Before you start thinking we should float away with all the oxygen, hydrogen, and nitrogen atoms, remember that the oxygen molecules are mainly part of the water in our body (H2O). The human body, which is made up of numerous cells, begins as a single, newly fertilized cell. So, if an organ is damaged, it means the cells and cell structure in the organ are also damaged. Every living thing is composed of cells. A group of cells from a tissue and a group of tissues form an organ.. A group of organs makes up an organ system and a group of organ systems make up the human body.. Is human body made of cells or atoms or molecules? Is the human body made up of eukaryotic cells? Therefore, it isn't surprising that most of a human body's mass is oxygen. Those muscles you work so hard to build, and that fat you always meant to lose. The excellent ability of water to dissolve so many substances allows our cells to use valuable nutrients, minerals, and chemicals in biological processes. Learn more about the composition and function of bone. Water's "stickiness" (from surface tension) plays a part in our body's ability to transport these materials all through ourselves. Carbon, the basic unit for organic molecules, comes in second. The human body is composed of trillions of cells. The human body is made of all of the above. Tissues are somewhat more complex units than cells. By definition, a tissue is an organization of a great many similar cells with varying amounts and kinds of nonliving, intercellular substance between them. Organs. Most of the human body is made up of water, H 2 O, with bone cells being comprised of 31% water and the lungs 83%. Its two principle components are collagen and calcium phosphate. To answer this question I’m going to start by talking about bigger things and moving us down into smaller things. Cells also contain the body’s hereditary material and can make copies of themselves. Bone tissue makes up the individual bones of the skeletons of vertebrates. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Oxygen, carbon, hydrogen, nitrogen, calcium and phosphorus are the elements that make up 99 percent of the human body's mass. Let’s start with the human body. Your bones, and your teeth, your brain and all your body fluids including blood and, well, urine. For their reference man, it's about 30 trillion, the researchers estimate. The most common figure is that around 60 per cent of your body is water – even your bones are about 30 per cent aqueous. Despite the fact that we have gobs of prokaryotic cells living inside and on us, humans are still categorically eukaryotic organisms. Cells make up tissue, tissue makes organs, organs make up organisms. On the other hand, the human cells in your body form all types of material you’re made of. This means that all human cells —including those found in the brain, the heart, the muscles, and so on—are also eukaryotic . Cells in a human body are of different types based on their structure and function. However, some "parts" of your body are not made up cells, this includes your hair and fingernails which are both made up of the protein keratin. The body is a whole bunch of stuff covered in skin. In fact, over half of the human body is made up of water (50-70%). The human body, like all organic compounds, contains a significant amount of carbon. So let’s focus on skin for a moment. This is where the reference man comes in - narrowing down the sex, age, weight, and height of a hypothetical human made it a whole lot easier for the reviewers to figure out what the average number of human cells would be. Bone, rigid body tissue consisting of cells embedded in an abundant hard intercellular material. The four elements are oxygen, hydrogen, carbon, nitrogen. 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