biology chapter 7.3

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Chapter 7.3 Structures and Organelles WASILLA HIGH SCHOOL MRS. RAGSDALE 2014 - 2015

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Chapter 7.3

Structures and

Organelles

WASILLA HIGH SCHOOL

MRS. RAGSDALE

2014 - 2015

What gives the cell structure:

Cytoplasm – the "fluid" that fills

the cell

Where all the chemical reactions

take place

Cytoskeleton – the structure

within the cytoplasm that holds

the organelles in place

Cell "Cookbook"

Nucleus – site of the DNA

DNA holds all the protein

"recipes"

Nucleolus – a place inside

the nucleus where

ribosomes are made

Ribosomes – Protein Makers

Ribosomes are made up of rRNA

Place where protein is synthesized

(made)

Endoplasmic Reticulum

Rough ER – rough because it has

ribosomes

Protein is made at the ribosomes

Smooth – no ribosomes

Complex carbohydrates, lipids and

phospholipids are made here

Golgi Apparatus – The UPS of the Cell

Packages, finishes and ships out

proteins

Hangs out next to the Rough ER

Vesicles – the protein sacs that

go back and forth between the

Golgi and the plasma

membrane

Endocytosis and Exocytosis

Active Transport of large molecules

Vacuoles: U-Store of the Cell

HUGE in plants

Small part of animal cells

Hold water, waste and other

useful materials (super

important to plants)

Lysosomes: Cellular Clean-Up Crew

Vesicles that contain

acids and enzymes that

go around finding things

to eat and digest like:

Waste

Bacteria

Viruses

Mighty Mitochondria

ATP maker

Powerhouse of the cell

Has lots of small folds called

cristae that help maximize the

space inside the tiny little

organelle

Chloroplasts (Plants Only)

Place where

photosynthesis takes

place

Chlorophyll – the

pigment that makes

plants green

Cell Wall (Plants Only)

Give rigid support to plant cells

Acts like their skeleton

Cilia and Flagella - Locomotion

Cilia are short hairs

that act like oars on

a rowboat

Flagella – long tails

that whip around