Cells, Tissues, Organs, And Systems - Weebly
Life Science Unit:What are living thingsmade of?Cells, Tissues,Organs, and Systems
Living Things A living thing is an organism. Many organisms have a body withdifferent parts. A structure is a body part that does acertain job for an organism. The function of a structure is the job itdoes for the organism.
What are living things? Most living things share certain characteristics. They all have basic needs for food, water,a place to live, and oxygen. They are made up of cells, the building blocksof living things. They are made up of parts that have specificjobs to help keep them alive.
Living things havefive basic life functions: Grow and develop Use energy (they get energy by eatingor making food) Reproduce (make more of their ownkind) Respond to the environment Get rid of waste
Cells All organisms are made of cells. A cell is the smallest unit of living matter; thebasic unit of life. Some kinds of organisms, like bacteria, aremade of only one cell. Other types of organisms, like people and trees,are made up of trillions of cells.
Many-Celled Organisms havedifferent types of cells Animals have: Bone cellsNerve cellsMuscle cellsBlood cellsPlants have: Leaf Cells Root Cells
How are organisms organized?Many-celled organisms are organized in cells, tissues,organs, and organ systems.Cells: Animals and plants are many-celledorganisms. Animals are made up of many kinds ofcells. You are made of blood cells, bone cells,skin cells, and many others. A plant also has different cells in its roots,stems, and leaves.
Tissues: In your body, a single skin cell or blood cell does notwork alone. Cells work together in groups called tissues. A tissue is a group of similar cells that work togethercarrying out a certain job. For example, skin cells work together as skin tissue thatcovers and protects your body. Other kinds of tissue in ananimal’s body include muscle, bone, nerve and blood. Plant cells are also organized into tissues. For example, leaves of plants are made of tissues that help theplant make food.
OrgansThroughout your body, tissues are groupedtogether so they can work together. An organ is a group of tissues that work together doingcertain jobs. Roots, stems, and leaves are organs of a plant. A leaf is an organ that makes food for the plant. The roots of a plant are the main organ in the root system of aplant. The heart, lungs, and brain are examples of animalorgans. Your heart is an organ: It contains muscle tissue, nerve tissue, and blood tissue. Its job is to pump blood throughout your body.
Organ SystemsOrgan systems work together so life processes likebreathing and digestion can be carried out, keeping manycelled organisms, like you, healthy and alive. When a group of parts work together, they form asystem. A group of organs working together to carry out aspecific life function is called an organ system. A plant’s roots, stem, and leaves are an organ system. Your digestive system is an organ system: It contains your mouth, esophagus, stomach, small and largeintestines, and liver. Digestion breaks down food and absorbs nutrients you need tolive.
Cells, Tissues, Organs,and Systems A cell is the smallest unit of living matter;the building blocks of living things. Tissues are groups of cells workingtogether to perform a certain job. Organs are groups of tissues thatperform a certain function. Organs working together to carry out acertain life function are an organ system.
How are organisms organized? Many-celled organisms are organized in cells, tissues, organs, and organ systems. Cells: Animals and plants are many-celled organisms. Animals are made up of many kinds of cells. You are made of blood cells, bone cells, skin cells, and many others. A plant also has different cells in its roots, stems, and leaves.
B organisms, organ systems, organs, tissues, cells C tissues, cells, organs, organisms, organ systems D organs, organ systems, organisms, cells, tissues 8 All of the following are true EXCEPT: A Skin is an organ. B Tissues are made up of organs. C Each organ is made up of its own kind of tissue. D Tissues are made up of cell.
AKSCI 2011 Alaska Department of Education and Early Development Cells Build Tissues, Organs, and Body Systems CELLS BUILD TISSUES, ORGANS, AND BODY SYSTEMS cells share basic parts, but the genes contained in the nucleus are a blueprint of the cell and direct it to form different tissues, organs and systems.
Cells Tissues Organs Organ Systems A tissue is a group of similar cells that work together to perform a specific function. For example, your brain is made mostly of nervous tissue, which consists of nerve cells. The next largest unit of organization is tissues.File Size: 1MB
Tissues, Organs, and Organ System Lesson Key points Humans—and other complex multicellular organisms—have systems of organs that work together, carrying out processes that keep us alive. The body has levels of organization that build on each other. Cells make up tissues, tissues make up o
Biology Cells The cell is a unifying concept in biology, you will come across it many times during your two years of A level study. Prokaryotic and eukaryotic cells can be distinguished on the basis of their structure and ultrastructure. In complex multicellular organisms, cells are organised into tissues, tissues into organs and organs into .
Modules which are part of Biology (Human) specifications only. * Only part of this chapter is required in the module: the sections needed are indicated in the te xt. The content you need for your AS exam. MICROSCOPES AND CELLS (1) 1 Cells are the basic units of organisms. In many organisms, cells are organised into tissues and tissues into organs. Several organs often link into an organ system .
Remember, the human body is organized in several levels, from the simplest to the most complex. . . Cells – the basic unit of life Tissues – clusters of cells performing a similar function Organs – made of tissues that perform one specific function Organ Systems – groups of organs that perform a specific purpose in the human body
Basic Description Logics Franz Baader Werner Nutt Abstract This chapter provides an introduction to Description Logics as a formal language for representing knowledge and reasoning about it. It first gives a short overview of the ideas underlying Description Logics. Then it introduces syntax and semantics, covering the basic constructors that are used in systems or have been introduced in the .
