Cell City Next cell 0.5 µm Cheek cellsPlant cells

Overview What are cells Cell types Cell function Cell components (organelles)

POP QUIZ 1.How many cells are in the human body? 2.How many different types of cells are in the human body? 3.What is the general name for the cell parts? 4.Which cell in the body does not have a nucleus?

POP QUIZ 1.How many cells are in the human body? 100 trillion 2.How many different types of cells are in the human body? Which organelle has its own DNA? Mitochondria 4.Which cell in the body does not have a nucleus? Red blood cells

Cells Smallest living unit [1] Can exist independently or as part of a organism What are the two types of cells?

Types of Cells Prokaryotic Primative cells Unicellular organisms Does not have a nucleus Has organelles Ex: bacteria Eukaryotic Has a nucleus Multicellular organism Has organelles Ex: Humans

Plant Cell

Animal Cell Diagram Cytoplasm Golgi Body

Types of cells Red Blood Cells White Blood Cells Neurons

Cell Functions Body movement Produce energy Protect the body from foreign invaders (bacteria, etc)

Cell Organelles Nucleus Nuclear membrane Ribosomes Smooth Endoplasmic Recticulum Rough Endoplasmic Recticulum Golgi Body Mitochondria Lysosomes Cytoplasm Cell membrane

Cell City Next cell 0.5 µm

Nucleus Functions – Controls the activities of the cell – Contains the DNA of the cell Mayor Nucleus

DNA Double stranded molecule that controls the cell Genetic material that makes you unique T or F: No two people have the same DNA?

Nuclear Membrane Function – Encloses the nucleus – Controls the movement of substances in and out of the nucleus Mayor’s security guard Nuclear membrane

Endoplasmic Reticulum Function – Transport Materials Around Cell Factory Rough ER

Smooth Endoplasmic Reticulum Function – Synthesize lipids – Store sugar – Detoxify drugs Does not have ribosomes on the surface Factory

Ribosomes Functions – Makes proteins Located on ER or in the cytoplasm Factory assembly line ribosomes

Golgi Body Function – Sorts & packages proteins – Sorts & packages cellular material Postal service Golgi Body Golgi

Mitochondria Function – Site of energy production Power generation factory Mitochondria

Cytoplasm Jelly-like fluid that fills the space within the cell Controls the movement of molecules within the cell Traffic lights Cytoplasm

Lysosomes Function – Recycles old organelles, RNA, and proteins Garbage Man lysosomes

Cytoskeleton Cell skeleton Function – Supports the cell’s shape – Used for intracellular transport Highway

Cell Membrane Surrounds the outside of the cell Serves as the cell barrier to control entry and exit of molecules City gates

Summary Cells are the smallest living unit Cell organelles have difference functions to help the cell function Organelles-Nucleus, Ribosomes, ER, Golgi, Mitochondria, Cytoplasm, Cell membrane

Building cell models In this exercise you will build a plant cell First short review of organelles not covered earlier

Cell Wall Provides structural support Controls movement of water within the cell. Cell wall

Storage Vacuole Stores nutrients and waste Can contain flower pigments (attract bees) Vacuole

Chloroplasts Site of photosynthesis Provides energy for the cell Contains chlorophyll, a green pigment Chloroplasts 6CO 2 + 6H 2 O + Energy C 6 H 12 O 6 + 6O 2 Photosynthesis equation

Cell Model Use the materials given to build a plant cell Model must include the following organelles: nucleus, mitochondria, chloroplast, central vacuole, cell wall, cell membrane, ribosomes, golgi body, cytoskeleton, smooth and rough ER. Also label the organelle function Happy Building!!

References 1.Starr, Cecie, Taggart, Ralph. Biology: The Unity and Diversity of Life. 6 th ed., Wadsworth Publishing. Belmont, Campbell, Neil., Reece, Jane. Biology. 6 th ed. New York : Benjamin Cummings, jgsca/CellMembrane.html&usg=__5XRMZLaJokRebk5kV_CKzZo8sso=&h=540&w=720&sz=14&hl=en&start=2&sig2=73b4OaApXg dmhrCKlQOpcw&um=1&tbnid=aifatGz8nqZDyM:&tbnh=105&tbnw=140&prev=/images%3Fq%3Dcell%2Bmembrane%2Bstructure% 26hl%3Den%26rls%3Dcom.microsoft:en-us:IE-SearchBox%26rlz%3D1I7GWYE%26sa%3DN%26um%3D1&ei=z2JRSvPPD52rmQe- kMCxBA