Worksheet+-+Cells

**  1. ****  What is a cell? **  Cells are the basic unit of structure. They function the human, animal, and every other living thing. The cells travel through your body, carrying oxygen and everything else your body/brain needs. Cells are a small unit just like a living matter. There are many different types of cells but the two kinds that are familiar are **animal** and **plant** cells. Plant cells have a cell wall and chloroplasts. Cells all have different sizes and shapes. Each cell has a different job to do. **  2.   ****   Why are cells considered living? **   Cells are considered the basic unit of living things. The reason for this is because every living thing is made up of cells. Ever part of our body is made up of cells. The reason why every organ, blood vessel, and inch of skin is there is because cells congregate to make these structures possible. **  3.   ****   Cells have special jobs. This is called cell specialization. Describe the structure (how it is made) and function (what does it do) of five different types of cells in human bodies. **. Thyroid Epithelial Cell. Peg Cell (of fallopian tube). Gland of Moll. Clara Cell (of lung). **  4.   ****   Cells join together to make tissues. Describe the structure and function of one human tissue. **   Lymph is a clear fluid that is similar to (blood) plasma, but contains less protein. The lymphatic tissues throughout the body operate in conjunction with each other to perform the functions of the lymphatic system. The lymphatic system is part of the body's immune system. The functions of the lymphatic system include:  · Draining interstitial fluid.  · Transporting dietry lipids.  · Protecting the body (organism) against invasion/infection. **  5.   ****   Tissues join together to make organs. Describe the structure and function of one human organ. **   The liver has a wide range of functions such as: detoxification, protein synthesis, and production of biochemicals necessary for digestion. **  6.   **  **rgans join together to form body systems. Name all the human body systems (you should have at least seven).** Cardiovascular system, Digestive system, Endocrine system, Urinary system, Immune system, Lymphatic system, Reproductive system, Muscular system, Skeletal system, Respiratory system, Nervous system. **  7.   ****   Cells are made of many different smaller parts called cell organelles. Complete the table. **
 * **  Organelle   ** || **   Function   ** ||
 * Cell Wall  ||   acts as a pressure vessel, preventing over-expansion when water enters the cell   ||
 * Cell Membrane  ||   The outer covering of a cell, keeps the ingredients of the cell intact.    ||
 * Cytoplasm  ||   A clear, jelly-like material that fills the cell.    ||
 * Chloroplasts  ||   Food producer of the cell.   ||
 * Mitochondria  ||   Provides energy for the cell.    ||
 * Nucleus  ||   ‘The brain of the cell’. It regulates all cell activity.    ||
 * Vacuoles  ||   Maintains fluids, removes wastes, stores ingested food, and provides/maintains cellular structure.    ||