A horseshoe crab has been around for almost 500 million years. They are classified as arthropods and not actual crabs. However, There are many reasons that have helped them survive this long including, they can eat almost any organic matter. There blood is different from normal, in fact it’s blue. This blood helps them heal any wounds right away. They can also live in areas with very low levels of oxygen, meaning habitat is not a big issue for them. Evolution has also helped them grow and adapt seeing as they’ve survived this long.
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<em><u>Hey hope this helps. </u></em></h2><h2>
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<em>Okay so basically, i just listed info/facts ideas here for you. Here is one of the different types of specialized cells within the human body. Nerve Cells: Also called neurons, these cells are in the nervous system and function to process and transmit information (it is hypothesized). They are the core components of the brain, spinal cord, and peripheral nerves.
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Your body includes miles of nerve fibers and blood vessels, many feet of digestive system, a strong skeletal framework, and a protective covering. Even more amazing is the fact that all of this is created using only one type of component: the cell.
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The cell is the basic unit of life. This makes sense given that every part of our body is made up of them, but not all cells are the same. In fact, our bodies are made up of over 200 types of specialized cells. Being specialized means that even though they are similar, cells differ in size, shape, or function depending on their role in our bodies. In other words, each type of cell is modified to work in the way our bodies need it to.
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Specialized cells group together to form tissues. Tissues then form organs like the heart, stomach, or skin. Organs also come together to form systems such as the respiratory system or digestive system. These systems come together to form our bodies. When you think about the big picture, it makes sense that a muscle cell would be different from a nerve cell or a bone cell. In this lesson, we will look at a few examples of specialized cells and how they are uniquely designed to carry out specific functions in our bodies.</em></u></h2><h2><u><em>
Hey have a wondeful day, hope i helped! <3</em></u></h2>
Answer:
The correct option is E.
Explanation:
Lymphocytes are known as white blood cells, and also main type of immune cells. They are synthesized in the bone marrow, and present in the blood, and lymph tissues.
1) The immune cells work together to protect the body against foreign molecules such as virus, and bacteria.
2) They contain MHC antigens for recognizing self.
3) They contain membrane receptors that recognize foreign antigens.
4) They are helping to develop into clones of B and T cells with extreme variations of specificity.
Answer:
Your answer would be D.
They are defined by their different physical features.
hope it helps!
