Answer:
Around 70% of our immune system dwells in our digestive tract in the form of gut-associated lymphoid tissue (GALT). An important component of our immune system called plasma cells (which give rise to invader-defending antibodies) also reside within the GALT. Our gut is the major channel between the external environment and the internal systems of our body. It is exposed to plenty of germs and harmful invaders such as bacteria and viruses present in food particles on a daily basis. [1] These toxic agents are perceived by the immune system in the gut as being harmful to our body and attacked. That being said, our body does not reject everything we put into it. This process is known as tolerance. When our immune system rejects an otherwise harmless substance, we are labeled as being sensitive or allergic to that food/food ingredient.
Explanation:
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<span>Answer: embryos of dissimilar organisms, such as sharks and humans, resemble each other
Explanation: The perception of Darwin's theory on Evolution was challenged when it was discovered that embryos of humans and shark resembled each other.</span>
Answer:
No alrighfull information like Wikipedia, or .com or .net because they earn money from it so not fully
Explanation:
Answer:
mass
Explanation:
the chemical formula for water is H20 which means every molecule of water has 2 atoms of hydrogen and one atom of oxygen. Here comes the key part. from the periodic table of elements one sees that one mole of hydrogen atoms weight 1 gram while one mole of oxygen weights 16 grams.
Answer:
As the heart pumps, glucose is carried in the bloodstream to cells all over the animal’s body. Oxygen which enters the animal’s body through its respiratory system (lungs, gills, skin, or exoskeleton) is carried by its transport system (blood for many animals to every animal cell. Once the glucose and oxygen arrive in the cell they can go through a chemical reaction. Glucose reacts with oxygen to produce carbon dioxide and water. Cells transform the chemical energy in the glucose molecules into energy for cell functions, motion energy, and heat. Because of cellular respiration, muscle cells have access to the energy necessary to contract or relax in response to a signal from the brain sent through nerve cells, so muscles can contract or relax enabling the animal to move. During cellular respiration, energy is released in the cell to enable the work of the cell to occur. The atoms found in glucose are rearranged into carbon dioxide and water and are no longer needed by the cell so they are considered waste products. Cells have to get rid of unwanted waste products. Carbon dioxide and water move out of cells and into the blood. The blood carries the carbon dioxide and water to different places in different animals (the lungs, gills, skin, kidneys, or exoskeleton) where they are released into the environment. Animal movement we observe at the macroscopic scale is possible because cellular respiration is happening at the atomic-molecular scale.
