How many cells are held within one sheath of Gloeocapsa? If all human body cells have the same DNA molecules with the same genes, then what accounts for differences in cell types (red blood cells, skin cells, nerve cells, muscle cells, etc.)? If all human body cells have...
an iron containing molecule that is responsible for binding oxygen. Each red blood cell can contain over 250 million molecules of hemoglobin which also gives the cells their red color. Red blood cells are created in the bone marrow through a process known as erythropoiesis, which takes on averag...
Most substances that pass the intestinal barrier pass through a cell, not around it. These cells, then, selectively carry certain molecules across the barrier into the body while blocking passage of other substances. On the other side of the cells (now inside the body), in the lamina propria...
Atherosclerosis is the root cause of many cardiovascular diseases. Extensive research in preclinical models and emerging evidence in humans have established the crucial roles of the innate and adaptive immune systems in driving atherosclerosis-associated
These properties are important in detecting ethanol in a sample by infrared (IR) spectroscopy. Read More Types of Devices: Intoxilyzer Diagram of the Intoxilyzer This device uses infrared (IR) spectroscopy, which identifies molecules based on the way they absorb IR light. Molecules...
Indeed, as with neuroactive metabolites, cell wall components of microorganisms in the intestinal lumen or attached to epithelial cells are poised to induce epithelial cells to release molecules that in turn modulate neural signaling or that act directly on primary afferent axons. 3. Colonization of ...
either in human cells or in microbes, which requires detailed functional understanding. “The hope is that we can design small molecules that target just the right host immune receptor or that inhibit or activate just the right microbial metabolic pathway to fix a particular problem,” he says....
A nucleotide is the basic building block of nucleic acids (RNA and DNA). HowStuffWorks DNA is one of the nucleic acids, information-containing molecules in the cell (ribonucleic acid, or RNA, is the other nucleic acid). DNA is found in the nucleus of every human cell. The information in...
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At the cellular level, medical illustrators must understand how to usemicroscopy techniquesin order to find references for accurate depictions of cellular structures. Objects at the smallest scale — atoms and many molecules — are smaller than the wavelength of visible light. This means they arebel...