Make a two lists Living Nonliving You have 3 minutes to list everything you see on the next slide as living or nonliving.

READ READ READ READ 1. Look at your list. 2. Do you need to change anything from your living list to your nonliving list or nonliving list to your living list. 3. Share with your group

Biology The Study of Life Recognizing life’s characteristics and the methods used to study life provide a basis for understanding the living world.

Principles of Biology Living things do not exist in isolation; they are all functioning parts in the delicate balance of nature. All living things depend upon other living and nonliving things in a variety of ways and for a variety of reasons. Leaves of this insect-eating pitcher plant form a tube lined with downward-pointing hairs that prevent insects form escaping. Trapped insects fall into a pool of water and digestive juices at the bottom of the tube.

Frog eaten by a pitcher plant https://youtu.be/6bexB8kAfXE Stomach of a pitcher plant https://youtu.be/hlWU_LYvK6g

The Pitcher Plant Name some of the pitcher plant characteristics that make it alive

The Diversity of Life The study of biology will reveal the great diversity of species on Earth and the way each species fits into the dynamic pattern of life on our planet. Click HERE to explore a multitude of diverse organisms.

Characteristics of Life Organisms in nature possess unique features that allow biologists to identify them as living rather than nonliving. They are as follows: Organization Homeostasis Reproduction Growth and Development Response to a Stimulus

#1 Organization All living things are organized into Cells Unicellular - one celled organisms. Ex. Paramecium, amoeba, stentor Multicellular – more than one cell. Ex. Humans, sponges Cells are not found in nonliving things. Scanning electron micrograph of Staphylococcus aureus bacteria.  The five slides that follow are examples of unicellular organisms

Paramecium

Stentor

Amoeba

Vorticella

Closterium

Organisms may be Multicellular Follow this link and click on “Go” in the right column for a real video clip that shows an animation of a multicellular sponge's filtration process

Click HERE to see a demonstration of hypothermia. #2 Homeostasis Regulate external and internal conditions. Get energy from food. Use Energy Click HERE to see a demonstration of hypothermia.

Ability to Reproduce Reproduction - is the ability to produce a new organism of the same type. It is not essential for the survival of an individual organism, but it is essential for the continuation of a species (a group of organisms that can interbreed and produce fertile offspring in nature). Asexual - One cell splits into two new cells. Ex. Paramecium, sponges, strawberry runner, spider plants and other simple organisms usually undergo asexual reproduction. There are two classifications of reproduction: Asexual and Sexual

Paramecium Undergoing fission

Reproduction Sexual Reproduction - two different cells join to form one new individual. New individual is different from either parent. Fertilization - union of the egg and sperm. Zygote - new cell formed as a result of fertilization. Most complex organisms reproduce in this way.

Sperm Egg

Growth and Development Two Basic Kinds of Growth: Increasing the number of cells. Increasing the size of the cells. Development: cycle of changes living things go through as they grow. Aging process - part of cycle. Death - end of the cycle.

Respond to Environment Stimulus - a change in the environment Ex. light shines in eyes. Response - reaction to the change. Ex. pupils get smaller. Vital to any organism Escape predators Find food Move to light Move away from toxins Find a mate

Importance of Biology Recognizing life’s characteristics and the methods used to study life provide a basis for understanding the living world.

Composition Notebook We will go outside around the school You will list 20 living and 20 non-living items found in nature. You can take pictures to include in your composition notebook.

Introduction to Biology The Seven Characteristics of Living Things 1. 2. 3. 4. 5. 6. 7. 20 living things found MHS Campus. 20 nonliving things found on MHS campus Pictures are worth bonus points.