NOTE: Each class will be given three of the following to pick from:
1. Describe the functions of water in the body.
Water is vital for life and is an essential nutrient.
1-A primary function of water is to serve as a lubricant. For example, it is found in saliva and is a substantial component in the fluid surrounding joints. Water is also in and surrounding body structures such as the brain, spinal cord and eyes. The water layer helps protect and cushion these vulnerable areas from shock and trauma that could otherwise cause significant damage.
2-Water is an important agent in body temperature regulation. The human body cannot function unless this is maintained within a certain range. Water helps achieve this in two ways. Since water is slow to change temperature and is efficient at storing heat, the amount of water in the body composition, 60 to 75 percent, is a natural temperature regulator. Another way this nutrient is used by the body for this purpose is through the process of perspiration. As water evaporates from the skin, the body is cooled.
3-Protein and carbohydrates are two nutrients necessary for healthy body functioning. They provide energy and are vital for growth and development. However, these two substances are useless to the body without water. Water enables a chemical reaction to occur which results in protein and carbohydrates becoming absorbable and usable by the body.
4-Water is essential in the body's transportation system. Nutrients and other necessary elements must be sent to all parts of the body in order to ensure functioning of every single body process, from respiration to muscle movement to digestion and waste removal. Without water as the movement medium, the body would not function.
2. List the six major functions of proteins.
The six major functions of proteins are to repair and maitenance- protein is vital in the maintenance of body tissue, including development and repair..hair, skin, eyes, muscle organs are all made from protein, energy- protein is a major source of energy, hormones- protein is involved in the creation of some hormones--these substances help control bodily functions that involve the interaction of several organs, enzymes- enzymes are proteins that increase the rate of chemical reactions in the body, transportation and storage of molecules-protein is a major element in the transportation and storage of certain molecules for example hemoglobin (a protein) transports oxygen throughout the body and Ferritin (a protein) combines with iron for strange in the liver, antibodies- proteins form antibodies that help prevent infection, illness and disease..they identify and assist in destroying antigens such as bacteria and viruses.
3. Draw and label an animal cell. Identify at least 10 components. Tell the function of each.
4. Using a drawing, explain the cell cycle. Include the steps of interphase, mitosis, and cytokinesis.
5. Name and describe the types of cells found in connective tissue.
The five types of mature connective tissue are (1) loose connective tissue, (2) dense connective tissue, (3) cartilage, (4) bone tissue, and (5) liquid connective tissue. The fibers of loose connective tissue are loosely arranged between cells. The types of loose connective tissue are areolar connective tissue, adipose tissue, and reticular connective tissue.
Areolar connective tissue consists of fibers (collagen, elastic, and reticular) and several kinds of cells (fibroblasts, macrophages, plasma cells, adipocytes, and mast cells) embedded in a semifluid ground substance. It functions are strength, elasticity, and support. Areolar connective tissue is located in the subcutaneous layer deep to skin and around blood vessels, nerves, and body organs.
Adipose tissue is a loose connective tissue in which the cells, called adipocytes, are specialized for storage of triglycerides (fats). Adipose tissue is found