living things are both similar to and different from each other and from nonliving things

Comparing LifeLiving things are both similar to and different from each other and from nonliving things.

Objective

1. Compare and contrast the parts of plants, animals, and one-celled organisms.

Cells

• Living things are composed of cells

Cells

Muscle Cells• Cells provide structure

and carry on major functions to sustain life.

Cells

Heart Muscle Cells• Cells provide structure

and carry on major functions to sustain life.

Cells

Red and White Blood Cells

• Cells provide structure and carry on major functions to sustain life.

Cells

• Cells are usually microscopic in size.

Cells

• cells function similarly in all living things

Strep bacteria

Onion plant

Chimpanzee

Cell Division

• Cells grow and divide, producing more cells.

E. Coli bacteria dividing

Cell Division

• Cells grow and divide, producing more cells.

Paramecium dividing

Cell Division

• Cells grow and divide, producing more cells.

Cell Division

Cells take in nutrients

• Cells use nutrients to • provide energy for the work that cells do

• to make the materials that a cell or an organism needs.

Photosynthesis

Cell Respiration

Cells take in nutrients

• to make the materials that a cell or an organism needs.

Photosynthesis

Cells take in nutrients

• to make the materials that a cell or an organism needs.

Photosynthesis

Cells take in nutrients• To provide energy for the work that cells do

Cell Respiration

Basic Cell Structure

• Most cells have cell membranes, genetic material, and cytoplasm.

Even bacteria!

bacterial chromosome

Structures Unique to Plant Cells

• Some cells have a cell wall and/or chloroplasts.

Elodea

Structures Unique to Plant Cells

• Some cells have a cell wall and/or chloroplasts.

Cell Wall

Chloroplast

The Nucleus

• Many cells have a nucleus.

Unicellular Organisms• Some organisms

are single cells

Amoeba

Unicellular Organisms• Some organisms

are single cells

Paramecium

Unicellular Organisms• Some organisms

are single cells

Euglena

Multicellular Organisms

• Some organisms are made up of many cells

Homo sapiens

Multicellular Organisms

• Some organisms are made up of many cells

Hydra

Multicellular Organisms

• Some organisms are made up of many cells

Oak Tree

Multicellular Organisms

• Some organisms are made up of many cells

Daphnia

Levels of Organization

• Cells are organized for more effective functioning in multicellular organisms.

Levels of Organization

.

Levels of Organization

OrganTissueCell Organ System

Plants

• Many plants have roots, stems, leaves, and reproductive structures.

Plants

• These organized groups of tissues are responsible for a plant’s life activities.

Multicellular Organism

• Animals have similar organs and specialized systems for carrying out major life activities.

Human Cardiovascular

System

Pig Cardiovascular

System

Digestive Systems

Classification

• Living things are classified by shared characteristics on the cellular and organism level.

Bacteria Cells with a Nucleus

Classification

• In classifying organisms, biologists consider details of internal and external structures.

Classification

• Biological classification systems are arranged from general (kingdom) to specific (species).

Classification

• Biological classification systems are arranged from general (kingdom) to specific (species).

Classification

• Biological classification systems are arranged from general (kingdom) to specific (species).