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Published byAlberto Moxham
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Cell Size From Smallest to l a rgest + Prokaryotic Cells
Kind of CellSize (approximate) Bacteria(E. coli) 1 um Red Blood Cell 8 um Elodea epidermal cell 65 um Amoeba 700 um Hen's egg 50,000 um
Smallest Cells Mycoplasmas bacteria µm
Largest Cells *Ostrich Egg Chicken Egg
Metrics 1 cm = 0.01 m (10 -2 )m centimeter 1 mm = m (10 -3 )m millimeter 1 µm = m (10 -6 )m micrometer 1 nm = m (10 -9 )m nanometer 1 Å = m ( ) Angstrom
Longest Cells Muscle and Nerve Cells
Form and Function Nerve Long to send impulses
Form and Function Muscle Move bones
Form and Function Blood Cells Smooth, travel through blood vessels
Form and Function Skin Cell Flat top for protection Cube for cushion
As cells get larger, the surface area to volume ratio ______________________ (increases/decreases). decreases
Contrasting Nucleoid and Nucleus
Which are bigger? Prokaryotic cells µm in size Eukaryotic cells µm in size
Cocci (spherical) Bacilli (rod) Spiral
Cyanobacteria Note the color: green
Bacteria Capsule Sticky to adhere to surfaces
Swimming Bacteria How Bacteria SwimHow Bacteria Swim (animation link) and also one at bottom
Do Now: Use your notes and hw 1.What are the 3 shapes of bacteria? 2.What is the function of the capsule? 3.What is a nucleoid?
All organisms (living things) can be classified into two categories: Unicellular (Single Celled) and Multi- cellular Unicellular organisms are made.
WHEN/WHY DO CELLS DIVIDE?. BIGGER IS NOT BETTER! IMPORTANCE OF CELL MEMBRANE IMPORTANCE OF CELL MEMBRANE –Controls what goes into/out of a cell –All cells.
WHY DO CELLS DIVIDE? ITS ALL ABOUT SIZE WHY DO CELLS DIVIDE? (instead of just getting bigger) 1.Diffusion 2.DNA 3.Surface area-to-volume ratio.
Cells Mini Assessment Review. DNA: Is the genetic material found in cells. DNA stands for deoxyribonucleic acid.
A CELL is the smallest unit that can carry on all the PROCESSES of life. Every LIVING thing is made up of ONE or more cells.
The Cell Ch. 7. Cell History Hooke - is the scientist who 1st coined the term “cell” – in the 1660’s he observed cork from a tree stem (they reminded.
Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings PowerPoint Lectures for Biology, Seventh Edition Neil Campbell and Jane Reece.
Looking at Cells Cells are VERY tiny! centimeter= 1/100 of a meter (cm) =approximate width of the average fingernail millimeter= 1/1000 of a meter (mm)
Cells. All living things are made up of cells Cells are the building blocks of life Organization Organ Systems Organs Tissues Cells Tissues are made of.
Diffusion in Cells: Is bigger always better? Lab #8.
Discovery of Cells. First to View Cells In 1665, Robert Hooke used a microscope to examine a thin slice of cork What he saw looked like small boxes so.
All About Eggs. Parts of the Egg Egg Sizes Jumbo Extra Large Large (Used in all recipes) Medium Small (less common) Pewee (less common) The larger the.
Are there limits to cell size? Demonstration Recap: Using 3 different sized agar blocks to represent cells (3 cm, 2 cm, and 1 cm), we observed the nutrient.
The Cell The Basic Unit of Life. The Importance of Cells All organisms are made of cells The cell is the simplest collection of matter that can live.
Ch. 8 Cell Structure & Function Lesson 2 How are Cells Specialized?
Cells Units of life The cell is a unit of organization.
1. A(n) _____ is the most basic unit of all living things. Cell Cell membrane Organelles Cell wall Structure Organ Prokaryote Eukaryote Tissue Function.
Kingdoms. Basic Branches of Life More than 200 years ago, Linnaeus began with only the Plant and Animal Kingdoms. Later Kingdoms Protista, Fungi,
Function of the Eye 80% of what we perceive is based on sight 3 types of neurons 1) Sensory Neurons –Captures the information coming from the senses (from.
Surface Area to Volume Ratios Chapter 10: Cell Division.
The Cell Fourth Grade. Teaching Message 1: All living things are made up of building blocks called cells.
Which term belongs in the third level of the hierarchy of life pyramid? (A)tissues (B)complex organisms (C)cells (D)organs.
Cells Anne Tierney, University Teacher Room 938, Boyd Orr Building Available through the Centre for Bioscience
1 Basic Structure of a Cell 2 Introduction to Cells Cells are the basic units of organisms Cells can only be observed under microscope Basic types of.
Functional Anatomy of Prokaryotic and Eukaryotic Cells Lecture 2.
Cell Structures and Functions Guided Notes – Part 2.
The Organization of Living Things Chapter 4 Section 3.
Chapter 3 Notes, part 1 Looking at Cells Cells were discovered in the 17 th century, when microscopes were invented….
Hover over the diagram for information on that part The effects of exercise on the cardiovascular system Hover over a hexagon for more information Effects.
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