Organ System Level example essay topic

1. Give several examples of the diversity of living things. Organism inhabits almost every place on Earth. Even the most extreme locations contain life.

Tiny organisms inhabit the Antarctic ice, giant worms live near hot vents on the ocean floor, and some organisms even live inside other organisms. 2. Explain how the parts of the biosphere interact to maintain life. Organisms interact with earth other and with the environment.

A meat eater will eat a grass eater, who feeds on plants, then the meat eater will die and return minerals to the soil, to make more plants for the grass eater to feed on, which is then eaten by another meat eater. As well nonliving things also play a large part in the survival of organisms including sunlight, atmospheric gases, water and minerals. 3. Describe how biology affects five areas of life: food, clothing, shelter, health, and fuel. Food: We can not survive more than 3 months without food. And all foods come from living things, or indirectly from the products of organisms.

Biology studies farming, pest control, livestock management, nutrition, food processing, and food preservation to improve the quality and quantity of food. Clothing: Clothing's main purpose in our lives is protection from the environment. Most clothing is made from biological products, Wool, silk, and leather come from animal products. Cotton and linen are common plant materials used for clothing. Shelter: Shelter protects organisms from the changing conditions of the environment. In our country housing, most of the time, is made from wood.

Forests provide wood for houses, and as well provide shelter for other creatures. Careful forest management must ensure that the need for wood is met without excessive loss of other animals' homes. Health: The discovery and production of medicines have changed many diseases from fatal illnesses into minor inconveniences. Biology in health goes beyond the treatment of illnesses. Healthful community practices of water treatment, garbage disposal, and food handling can prevent many kinds of human suffering. Fuel: We need fuel to cook food, and heat our homes.

Fuel is used to run cars and other machines. Wood comes from plants and coal comes from the fossilized remains of plaints, Petroleum products, such as oil and gasoline, are made from the decayed remains of tiny marine organisms that lived millions of years ago, Together, petroleum and coal are referred to as fossil fuels, Many people are concerned that the Earth may be running out of fossil fuels, One challenge facing biologists is the development of renewable fuel sources. 4. Summarize the characteristics that are common to all organisms.

All organisms are made of cells, all organisms respond to the environment, plants grow in the direction of sunlight, and birds migrate as weather changes. All living organisms use energy for growth and maintenance, such as food and water. Organisms reproduce, without reproduction there would be no living things to replace those that die. Organisms grow and develop, they grow in size, and may change in shape or form. And organisms adapt to their environments through evolution, adaptations enable creatures to survive in changing environments.

5. Summarize the levels of organization in living systems from the simplest to the most complex. Molecular Level: The simplest parts of a living system are the atoms and molecules of which an organism, like all matter, is made. Some molecules, such as DNA, are found only in living things. Cellular Level: Many different molecules interact within one cell. The cell is the smallest unit of life capable of carrying out all the functions of living things.

Tissue Level: A group of cells that performs a specific function in an organism is a tissue. Muscle is a familiar type of animal tissue. Organ Level: Several different types of tissues that function together for a specific purpose make up an organ. The heart is an organ made of muscle, nerve, and other kinds of tissues. Organ System Level: An organ system is made of several organs working together to perform a function, The circulatory, digestive, and reproductive systems are some of the organ systems in the human body. Population Level: A group of organisms of the same species that lives together in a particular location is a population, The sugar maples in a forest or the pigeons in a city are examples of populations.

Community Level: A community in clues all the populations of different kinds of organisms living in the same place, A lawn is an example of a community, The lawn community contains populations of grasses, insects, worms, bacteria, and other organisms. Ecosystem Level: An ecosystem includes the community of organisms in an area, as well as the nonliving factors of the environment, While the organisms in a forest make up the forest community, the forest ecosystem also includes the water, minerals, and climate of the area. 5 b. A. Molecules B. Cells C. Tissues D. Organ E. Organ system 6. List some of the areas of study within biology.

Anatomy, Botany, Cytology, Ecology, Ethology, Genetics, Immunology, Microbiology, Molecular biology, Physiology, Taxonomy, Zoology. 6 b. Briefly describe the subjects of five of these areas of study Anatomy: The physical structure of humans or other animals. Botany: The structure and function of plants. Cytology: The structure and function of cells Ecology: The relationships among organisms and their environments.