Section 1-1 8 characteristics of living things Unit 1—Molecular Biology Essential Question Why is a human living, but a cell phone is not? Section 1-1 8 characteristics of living things Learning Targets: Differentiate between living and non-living beings.

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Biology Bio- means life in Latin -ology is the study of

biology Biology means _____ ________ of _____ .

biology Biology can study anything that deals with a living thing (organism) Many biologist specialize in just one area of biology Example: Zoologists study animals Botanists study plants Ecologists study the environment

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biology Scientists follow 3 steps: 1. Observe

biology Scientists follow 3 steps: 1. Observe 2. Test a hypothesis

biology Scientists follow 3 steps: 1. Observe 2. Test a hypothesis 3. Make an inference

Characteristics of life There are certain criteria that must be met for something to be considered living.

Characteristics of life Living things share 8 characteristics.

Characteristics of life They MUST have all 8 to be considered living.

Characteristics of life 1. Cells: The basic unit of all life.

Characteristics of life Prokaryotes/eukaryotes There are 2 types: ____ (no nucleus) & _____ (nucleus)

Characteristics of life Prokaryotes/eukaryotes There are 2 types: ____ (no nucleus) & _____ (nucleus)

Characteristics of life 2. Genetic Code: An instructional blueprint.

Characteristics of life DNA/RNA There are 2 examples: ____ (database) & ____ (protein)

Characteristics of life DNA/RNA There are 2 examples: ____ (database) & ____ (protein)

Characteristics of life 3. Reproduction: Passing on genetic material.

Characteristics of life Asexual/sexual There are 2 types: ____ (no exchange) & _____ (exchange)

Characteristics of life Asexual/sexual There are 2 types: ____ (no exchange) & _____ (exchange)

Characteristics of life energy 4. “Eat”: Obtains and uses _____.

Characteristics of life 5. Homeostasis: Maintains an internal balance. H2O Content

Characteristics of life 5. Homeostasis: Maintains an internal balance. Temperature

Characteristics of life 5. Homeostasis: Maintains an internal balance. Food Intake

Characteristics of life changes 6. Evolve: _______ over time.

Characteristics of life Birth/death 7. Grow: Develops between ____ and ____.

Characteristics of life 8. Responds to the environment

All living things have one or more ____ . cells cells All living things have one or more ____ .

A single cell meets all _#?_ requirements of living things. cells 8 A single cell meets all _#?_ requirements of living things.

cells Multicellular organisms (plants and animals) have specialized cells. Cells that perform different jobs Humans: at least 85 different cell types