Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Name:_________________________ Text Per:______Date:_________________ Levels of Biological Organization Background: In unicellular (single-celled) organisms, the single cell performs all life functions. It functions independently. However, multicellular (many-celled) organisms have various levels of organization within them. Individual cells may perform specific functions and also work together for the good of the entire organism. The cells become dependent on one another. Activity 1: Use the descriptions on your handout to determine which level of organization (organelle, tissue, organ, system, etc.) is being described. Write the level of organization in the parentheses provided above the picture. Activity 2: After reviewing the different levels of organization, use your handout to help you fill in the following chart by selecting the example that meets the requirement listed. (Hint: You will need to use “epithelial tissue” twice to complete the chart). some tissues more than once. *Each box will be filled with 1 term. Organelle Protects by forming a selective barrier Breaks down food for energy Removes waste Provides means of transportation Gives structural support Controls and coordinates actions Tissue Organ System Cell Membrane (___________) Bladder (___________) Lysosomes (___________) This organelle a selectively This cell part is aisbarrier that controls what goes and outwhat of permeably barrier thatincontrols the cell. goes in and out of the cell. The hollow, muscular muscular Thebladder bladder is is aa hollow, organ that collects urine from the organ that collects urine excreted by kidneys before disposal by the kidneys before disposal by urination. urination. Lysosomes organelles that Lysosomes areare cell parts that contain proteins enzymes that to break down and contain break down and remove waste in the cell. remove waste in the Mitochondria (___________) Skin (___________) Microtubules (___________) Mitochondria are the site of Mitochondria are the in sitewhich of cellular cellular respiration respiration in which are sugar molecules sugar molecules broken down to release energy. are broken down to release energy. The skin is the largest organ of the The skin is the largest organ. It integumentary system. It protects the protects muscles, bones, and underlying muscles, bones, and at organs. It helps keep our bodies organs well contributing heat the rightas temperature. The to skin also gives us the sense of touch. regulation and sensory perception. Microtubules serve as part of the Microtubules are part of the cell’s cell’s system of structural support. system of structural support. They They are cell alsoshape. involved in the process give the of cellular division. Cardiac (___________) Digestive (___________) Nervous (___________) Coordinated contractions of cardiac This group of cells in the heart tissue in the heart pump blood pump blood throughout the body. throughout the body. Although digestive systems take This groupinoforganisms organs work many forms throughout together to break down food so the world, the main function that it can be used for energyofby digestion the body. is to break down food so that it can be used for energy by the body. Epithelial (___________) Skeletal (___________) Epithelial tissue is located on the very This collection of cells is located on outside an organism (i.e. skin) as the very of outside of an organism as well as in the lining of hollow organs well as the lining of hollow organs such asasthe to such thebladder. bladder.ItItsserves purposes protect. include protection and secretion. The skeletal system is a rigid The skeletal system framework to which theprovides softer tissues support for the body where softer and organs of the body are attached. tissue and organs are attatched. It provides protection and structural support for the body. c Nervous tissue is the main This collection of nerve cells form component of the brain and spinal the brain and spinal cord which cord which regulate and control body control body functions. functions. Urinary (___________) The urinary system produces, stores, and eliminates urinary waste. This collection of organs work Through this process, the body is able together to produce, store and to eliminate regulate electrolyte balance as well urinary waste. as maintain a healthy pH level. Nucleus (___________) Brain (___________) Bones are rigid organs that form part Bones are rigid organs that help of the endoskeleton of vertebrates. organisms to move. Bones also They help to move, support and help support and protect the protect body. the body as well as producing red and white blood cells. ThisThis cellorganelle part contains the cell’s contains the cell’s genetic material (DNA) andtherefore therefore genetic material (DNA) and controls the cell’s activities. controls the cell’s activities. In most vertebrate animals, the brain The brain is the central organ of is the centralsystem. organ ofIt the nervous the nervous controls the other systems of the system. It controls thebody otherby systems either controlling muscles or of the body by either activating releasing chemicals. muscles or releasing chemicals. Heart (___________) Endoplasmic Reticulum (__________) The heart is a muscular organ found The heart is a muscular organ in all withwith a circulatory found in animals all animals a system. It issystem. responsible pumping circulatory It is for responsible for pumping blood the throughout the blood throughout body through body. the use of coordinated contractions. The endoplasmic reticulum is an organelle thatreticulum forms an is an The endoplasmic interconnected network tubules organelle that serves toof transport newly thatmade serve proteins. to transport newly synthesized proteins. Circulatory (___________) Connective (___________) Nervous (___________) This system transports nutrients (gases, hormones, etc.) nutrients carried in This system transports carried in blood blood and lymphthroughout throughoutthe the body. It is powered by involuntary body. It is powered by the involuntary contractions of the heart. contractions of the heart. Connective tissue is made of a Connective tissue is made up of network proteinstructural fibers thatsupport. provide cells thatofprovide structural Bone, Bone, blood, support. cartilage, andblood, fat are the four main connective cartilage, andtypes fat areofthe four main tissue.types of connective tissue. This system of This systemcontains contains aa network of specialized calledneurons neuronsthat and specializedcells cells called organs that control actions by coordinate actions by transmitting sending signals thoughout the body. signals throughout the body. Integumentary (___________) Smooth Muscle (___________) The integumentary system consists of The integumentary system consists its and appendages of the the skin skin,and hair, nails. It (hair, serves feathers, nails, etc.). serves to protect the body as It well as to detect pain, and protect thesensation, body as well to detect pressure. pain, sensation, and pressure. Smoothmuslce tissue istissue able toiscontract Smooth able to on contract on its own without a signal its own without a signal from the from the brain. These involuntary brain. These involuntary contractions contractions help organs such as help organs such as the stomach and the stomach to break down and intestines break down move move food to throughout theand digestive food through the digestion process. system. Bones (___________) Stomach (___________) The stomach is a muscular, hollow The stomach is awith muscular, hollow organ that works the digestive organ that works with the digestive system. It releases enzymes and system. It releases strong acids strong acids that help to break down that help to break down food. food to release useable energy.