Lesson Overview Lesson Overview Studying Life Bell Ringer What is the difference between a hypothesis and a scientific theory? ____________________________________________

Lesson Overview Lesson Overview Studying Life Bell Ringer What are 2 benefits of being able to produce / make human organs? ____________________________________________

Lesson Overview Lesson Overview Studying Life Bell Ringer What is an easy way to remember how to convert units in the metric system? ____________________________________________

Lesson Overview Lesson Overview Studying Life Lesson Overview 1.3 Studying Life

Lesson Overview Lesson Overview Studying Life Daily Objectives -List the characteristics that all living things share. -Identify the central themes of biology. -Explain how life can be studied at different levels.

Lesson Overview Lesson Overview Studying Life Characteristics of Living Things Biology is the science that employs the scientific method to study the living world What are some characteristics of living things?

Lesson Overview Lesson Overview Studying Life Characteristics of Living Things Living things share the following characteristics: 1.Made up of units called cells 2.Based on a universal genetic code (DNA) 3.Obtain and use matter and energy 4.Grow and Develop 5.Reproduce 6.Maintain a stable internal environment 7.Change over time 8.Respond to their environment

Lesson Overview Lesson Overview Studying Life Cellular Basis of Life Organisms are composed of one or more cells, which are the smallest units that can be considered fully alive. Cells can grow, respond to their surroundings, and reproduce. Plant CellBacterial Cell

Lesson Overview Lesson Overview Studying Life Cellular Basis of Life If an organism is composed of only a single cell it is referred to as a unicellular organism. The cells in multicellular organisms (many celled) are remarkably diverse, existing in a variety of sizes and shapes. Ex. The human body alone is made up of at least 85 types of cells. Red Blood Cells

Lesson Overview Lesson Overview Studying Life Information and Heredity The genetic code is common, with minor variations, to every organism on Earth. That information, carried in DNA, is copied and passed from parents to offspring (Children).

Lesson Overview Lesson Overview Studying Life Matter and Energy Matter serves as nutrients to build body structures and energy is used to fuel the processes of life.

Lesson Overview Lesson Overview Studying Life Matter and Energy Plants obtain energy from sunlight and take up the nutrients they need from air, water, and soil. Animals must consume other organisms to obtain both nutrients and energy.

Lesson Overview Lesson Overview Studying Life Growth and Development Growth = When an organism gets bigger or increases in size Example: Lifting Weights Development = When an organism gets more complex or specialized Example: Puberty

Lesson Overview Lesson Overview Studying Life Reproduction All organisms produce new organisms through a process called reproduction. Sexual Reproduction – Cells from two different parents unite to produce the first cell of the new organism. Asexual Reproduction – The new cell has a single parent. Ex. Budding

Lesson Overview Lesson Overview Studying Life Homeostasis An organism’s ability to maintain a relatively stable internal environment.

Lesson Overview Lesson Overview Studying Life Evolution Evolution, or the change in living things over time, explains inherited similarities as well as the diversity of life.

Lesson Overview Lesson Overview Studying Life Structure and Function Structures evolve in ways that make particular functions possible, allowing organisms to adapt to a wide range of environments.

Lesson Overview Lesson Overview Studying Life Interdependence in Nature All forms of life on Earth are connected together into a biosphere, which literally means “living planet.” Relationships between organisms and their environment depend on these processes: 1.Flow of energy 2.Cycling of matter

Lesson Overview Lesson Overview Studying Life Science as a Way of Knowing -Science is not just a list of “facts.” -The job of science is to use observations, questions, and experiments to explain the natural world.

Lesson Overview Lesson Overview Studying Life Response to the Environment Organisms detect and respond to stimuli from their environment. A stimulus is a signal to which an organism responds. Ex. Temperature, light, water, movement

Lesson Overview Lesson Overview Studying Life Branches of Biology Zoologists (Animals) Botanists (Plants) Cell Biologists (Cells) Geneticists (DNA) Ecologists (Environment)

Lesson Overview Lesson Overview Studying Life Branches of Biology Some of the levels at which life can be studied include: Molecules Cells Tissues Organisms Populations Communities Biomes The Biosphere

Lesson Overview Lesson Overview Studying Life Branches of Biology Molecules Groups of atoms; smallest unit of most chemical compounds Water DNA

Lesson Overview Lesson Overview Studying Life Branches of Biology Cells Smallest functional unit of life Nerve cell

Lesson Overview Lesson Overview Studying Life Branches of Biology Groups of Cells Tissues, organs, and organ systems Nervous tissue Brain Nervous system

Lesson Overview Lesson Overview Studying Life Branches of Biology Organism Individual living thing Bison

Lesson Overview Lesson Overview Studying Life Branches of Biology Population Group of organisms of one type that live in the same area Bison herd

Lesson Overview Lesson Overview Studying Life Branches of Biology Community Populations that live together in a defined area Hawk, snake, bison, prairie dog, grass

Lesson Overview Lesson Overview Studying Life Branches of Biology Ecosystem Community and its nonliving surroundings Hawk, snake, bison, prairie dog, grass, stream, rocks, air

Lesson Overview Lesson Overview Studying Life Branches of Biology Biosphere The part of Earth that contains all ecosystems