Pretest What is a cell? What are some components of a cell? What are 3 differences between a plant and animal cell? What is the difference between a prokaryotic.

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Presentation transcript:

pretest What is a cell? What are some components of a cell? What are 3 differences between a plant and animal cell? What is the difference between a prokaryotic and eukaryotic cell?

What are some characteristics of living things?

obtain and use materials and energy respond to their environment most living things move in some way reproduce maintain a stable internal environment grow and develop are made of cells

Cell Theory all living things are composed of cells all cells come from other cells the cell is the basic unit of structure and function in living systems

Different Human Cells

Most Cells… Depend on external energy sources Exchange material with their environments Are smallsmall Use their DNA to regulate what they do Have the same basic components

Organelles

The Nucleus Control center Contains DNA (in chromosomes)

We all began life as a single cell…

Organelles: Ribosomes (on ER) Reads message from nucleus and makes proteins

Organelles: Golgi Apparatus Modifies proteins and prepares for shipping

Organelles: Mitochondria Provide energy

Cell Membrane – controls what goes in and out Cytoplasm – fills cell (gooky stuff) Cilia and flagella - movement cilia/flagella

Organelles: Vesicles storage

Cell membrane Nucleus Nuclear envelope/pore Chromatin (DNA) Cytoplasm Mitochondrion Golgi body Centriole Microtubule Vacuole Lysosome Ribosome Endoplasmic reticulum (ER)

Plant Cells

What do plant cells have to do?

Plant Cells Photosynthesis Large water Storage Support (versus movement)

Plant Cells Large central vacuole (store water) Chloroplasts (for photosynthesis) Cell wall (for support)

Eukaryotic versus Prokaryotic EukaryoticProkaryotic

Prokaryotic Cells NO Nucleus No membrane bound organelles

Organ Systems Cells tissues organs organ systems Groups of organs that perform a common function Eleven organ systems in the human body

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