The World of Life Science It’s Alive or Is It? Chapter Two Chapter One and Chapter Two It’s Alive or Is It?

Asking About Life Do Now! Section 1 Have you ever wondered how homing pigeons find their way home? Do you know why the dinosaurs went extinct? Write five questions about the natural world that you hope to have answered in this class. Record your questions in your science journal. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Asking About Life Objectives Section 1 Explain the importance of asking questions in life science. State examples of life scientists at work. List three ways life science is beneficial to living things. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

It All Starts With a Question Section 1 Asking About Life It All Starts With a Question In Your Own Backyard Take a look around your room, your home, and your neighborhood. What questions about life science come to mind? Touring the World The questions you can ask about your neighborhood are just a sample of all the questions you could ask about the world. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Who are Life Scientists?

What do Life Scientists study?

Asking About Life Life Scientists Section 1 Anyone - Women and men from any cultural or ethnic background can become life scientists. Anywhere - Making investigations in a laboratory is an important part of life science, but life science can be studied in many other places, too. Anything - Life scientists specialize in many different areas of life science. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0" Copyright © by Holt, Rinehart and Winston. All rights reserved.

Asking About Life Why Ask Questions? Section 1 Fighting Diseases - Life scientists search for ways to fight diseases. Understanding Inherited Diseases - Life scientists hope to find ways to cure or prevent inherited diseases. Protecting the Environment - Life scientists also study environmental problems on Earth. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Characteristics of Living Things Section 1 Characteristics of Living Things Objectives Describe the six characteristics of living things. Describe how organisms maintain stable internal conditions. Explain how asexual reproduction differs from sexual reproduction. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Studying the Web of Life Ecology - is the study of interactions of organisms with one another and their environment Two parts of the environment Biotic – the living factors of the environment Abiotic – the non-living part of the environment including the water, rocks, light, and temperature.

The Six Characteristics of Living Things are: Have cells Sense and respond to change Reproduce Have DNA Use energy Grow AND develop

1. Living Things Have Cells A cell is: a membrane-covered structure that contains all of the materials necessary for life. Some organisms are: made up of only one cell and some are made up of trillions of cells.

2. Sense and Respond to Change A stimulus: anything an organism responds to OR anything that causes change Examples of stimuli are: touch, light, loud sounds, hunger, gravity, chemicals Response: The reaction from the organism BECAUSE of the stimulus

2. Sense and Respond to Change Responding to External Change Organisms must respond to change in the external environment in order to maintain their homeostasis. Homeostasis: the maintenance of a consistent internal state in a changing environment Example of Homeostasis: body temperature human muscles

3. Reproduction Having Offspring Organisms make other organisms similar to themselves. They do so in one of two ways: by sexual reproduction or by asexual reproduction. Sexual: reproduction in which sex cells from two parents unite Sharing traits from both parents Asexual: an organism produces offspring IDENTICAL to itself Produced from traits from one parent Example: single-celled organisms

4. Have DNA DNA in Cells: The cells of all living things contain the molecule deoxyribonucleic acid, or DNA. heredity (passing genetic traits from one parent to child) DNA: Deoxyribonucleic Acid all living things have DNA

5. Use Energy Energetic Organisms: Organisms use energy to carry out the activities of life. Animal metabolism is: all chemical processes that occur in an organism Activities included in metabolism are: Making food Breaking down food Moving material into and out of cells Building cells Stores energy

6. Grow AND Develop Growing Up: All living things, whether they are made of one cell or many cells, grow during periods of their lives. What is the difference between growth and development?? Growth: increase in size Development: Change in form as organism grows Give an example of development: Humans: infant-toddler-kid-teenager-adult Tree growing: acorn-sapling-oak tree

The Necessities of Life Section 2 The Necessities of Life Do Now! What do you think your mass would be if there were no water in your body? What else besides water is your body composed of? Where do you think you get the minerals that make up your body mass? Record your answers in your science journal. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Chapter 2 Section 2 Four Necessities of Life Food Shelter Air Water

Food gives organisms: Energy Humans are composed of 70 % of water. Oxygen: Air is a mixture of several different gases, including oxygen and carbon dioxide. Most living things use oxygen in the chemical process that releases energy from food. Home Sweet Home: All organisms need a place to live that contains all of the things they need to survive.

Producers are: organisms that make their own food Consumers are: organisms that must eat (consume) other organisms for food

Decomposers are: organisms that get their food by breaking down the nutrients in dead organisms or animal wastes

Scientific Methods Do Now! Section 2 Which do you think is more important: imagination or knowledge? Can one exist without the other? Reflect on this in your science journal. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Scientific Methods Objectives Section 2 Describe scientific methods. Determine the appropriate design of a controlled experiment. Use information in tables and graphs to analyze experimental results. Explain how scientific knowledge can change. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

What Are Scientific Methods? Section 2 Scientific Methods What Are Scientific Methods? Follow the Steps: Scientific methods are the ways in which scientists follow steps to answer questions and solve problems. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Scientific Methods Section 2 Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – navy 28 points Arial Bold Body text – black 24 points Arial and Arial Bold Bullets – navy Copyright – white 12 points Arial Background name: HST-Presentation_white.jpg Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Do background research The Scientific Method Do background research Construct a hypothesis Test your hypothesis by doing an experiment Ask a question Draw conclusion Analyze your data Share your results

Scientific Methods Ask a Question Section 2 Make Observations Accurate Observations No matter what observations reveal, they are useful only if they are accurately made and recorded. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Scientific Methods Form a Hypothesis Section 2 What Is a Hypothesis? A hypothesis is a possible explanation or answer to a question. Is It Testable? To be useful, a hypothesis must be testable. Predictions - Before scientists can test a hypothesis, they must first make predictions. A prediction is a statement of cause and effect that can be used to set up a test for a hypothesis. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Scientific Methods Test the Hypothesis Section 2 Under Control - A controlled experiment tests only one factor at a time and consists of a control group and one or more experimental groups. Designing an Experiment - Designing a good experiment requires planning. Every factor should be considered. Collecting Data - If an experience produces the same results again and again, scientists can be more certain about the effect the variable has on the outcome of the experiment. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Parts of an Experiment Control Group – the standard we will compare our results to. Variable – the one thing that was changed Constants – the things that are kept the same from one trial of an experiment to the next

Scientific Methods Analyze the Data Section 2 Scientists must organize the data so that they can be analyzed. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Scientific Methods Draw Conclusions Section 2 After scientists have analyzed the data from several experiments, they can draw conclusions. Is It the Answer? Finding an answer doesn’t always end an investigation. Often, that answer begins another investigation. In this way, scientists continue to build knowledge. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Scientific Methods Communicate Results Section 2 Organize the Data into a logical conclusion and share your results Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Scientific Method

Scientific Models Do Now! Section 3 Answer the following questions in your science journal: What is a model? Name several types of models. What models have you used in your own life? Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Scientific Models Objectives Section 3 Give examples of three types of models. Identify the benefits and limitations of models. Compare the ways that scientists use hypotheses, theories, and laws. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Three Types of Scientific Models Section 3 Scientific Models Three Types of Scientific Models Conceptual Models - systems of ideas. Mathematical Models - numbers, equations, or other forms of data. Physical Models - toy rocket and a plastic skeleton Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Scientific Models Benefits of Models Section 3 What Can Models Be Used For? Models are often used to represent things that are very small or very large. Models may also represent things that are very complicated or things that no longer exist. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Building Scientific Knowledge Section 3 Scientific Models Building Scientific Knowledge Scientific Theories - theory - an explanation that ties together many related facts, observations, and tested hypotheses. Scientific Laws - a law is a summary of many experimental results and observations. Combining Scientific Ideas - Ideas from physical and earth science can be combined with ideas from life science. Scientific Change - If new evidence contradicts an accepted idea, scientists must be willing to reexamine the evidence and reevaluate their reasoning. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Tools, Measurement, and Safety Section 4 Tools, Measurement, and Safety Objectives Give three examples of how life scientists use computers and technology. Describe three tools life scientists use to observe organisms. Explain the importance of the International System of Units, and give four examples of SI units. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Tools, Measurement, and Safety Section 4 Tools, Measurement, and Safety Computers and Technology What Is Technology? technology - the application of science for practical purposes. Computers and Science - Computers can be used to create graphs, solve complex equations, and analyze data. Computers also help scientists share data and ideas with each other and publish reports about their research. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Tools, Measurement, and Safety Section 4 Tools, Measurement, and Safety Tools for Seeing Compound Light Microscope - A light microscope is an instrument that magnifies small objects so that they can be seen easily. Electron Microscope - In electron microscopes, tiny particles called electrons are used to produce magnified images. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Compound Light Microscope Section 4 Compound Light Microscope Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – navy 28 points Arial Bold Body text – black 24 points Arial and Arial Bold Bullets – navy Copyright – white 12 points Arial Background name: HST-Presentation_white.jpg Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Tools, Measurement, and Safety Section 4 Tools, Measurement, and Safety Measurement The International System of Units - In the late 1700s, the French Academy of Sciences began to form a global measurement system now known as the International System of Units (also called SI, or Système International d’Unités). Today, most scientists and almost all countries use this system. Metric system Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Tools, Measurement, and Safety Section 4 Tools, Measurement, and Safety Measurement continued Length - A meter is the basic SI unit of length. Volume - Volume is the measure of the size of an object in three-dimensional space. Volume is often given in liters. Mass - A measure of the amount of matter in an object is mass. The kilogram is the basic unit for mass. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Tools, Measurement, and Safety Section 4 Tools, Measurement, and Safety Measurement continued Temperature is the measure of how hot an object is. Scientists often measure temperature in degrees Celsius. Area is the measure of an object’s surface. The units for area are square units, such as square meters. Density is the ratio of the mass to volume of a substance. Units often used for density are grams per milliliter. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Common SI Units and Conversions Section 4 Common SI Units and Conversions Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – navy 28 points Arial Bold Body text – black 24 points Arial and Arial Bold Bullets – navy Copyright – white 12 points Arial Background name: HST-Presentation_white.jpg Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Tools, Measurement, and Safety Section 4 Tools, Measurement, and Safety Safety Rules! Safe Scientific Investigations - Safety rules must be followed at all times during a scientific investigation. Get Permission - Before starting any scientific investigation, obtain your teacher’s permission. Understand Procedures - Read the lab procedures completely and carefully before you start. Learn Safety Symbols - Pay attention to safety information and caution statements. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Classification is the division of organisms into groups, or classes, based on specific characteristics.

Basic 7 level system. Why Classify? To put things into groups of some kind. • It is usually done based on some type of similarities.

Taxonomy: the science of describing, naming and classifying organisms. Binomial Nomenclature is the two word naming system The first part of a scientific name is the genus name. The second part is the species name. The first letter of the scientific name is always an upper case letter and the whole name is either underlined or italicized. Example: Canis lupus, or Homo sapien

The Six Kingdoms

Section 2 The Six Kingdoms The Two Kingdoms of Bacteria Archaebacteria- prokaryote bacteria that can live in extreme environments Eubacteria - Eubacteria are prokaryotes that live in the soil, in water, and even on and inside the human body! Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0" Copyright © by Holt, Rinehart and Winston. All rights reserved.

The Six Kingdoms Kingdom Protista Kingdom Fungi Section 2 Protista - single-celled or simple multicellular organisms that are different from plants, animals, bacteria and fungi Kingdom Fungi Fungi – made up of non-green, eukaryotic organisms that have no means of movement, reproduce by using spores, and get food by breaking down substances in their surroundings and absorbing nutrients. Ex. molds and mushrooms Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0" Copyright © by Holt, Rinehart and Winston. All rights reserved.

have cell walls made of cellulose cannot move around Section 2 The Six Kingdoms Kingdom Plantae Plants – complex, multicellular organisms that are usually green have cell walls made of cellulose cannot move around and use the sun’s energy to make sugar by photosynthesis. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0" Copyright © by Holt, Rinehart and Winston. All rights reserved.

are usually able to move have specialized sense organs. Section 2 The Six Kingdoms Kingdom Animalia Animals - contains complex, multicellular organisms that don’t have cell walls are usually able to move have specialized sense organs. Header first line (section#) – white 24 points Arial Bold Header second line (title) – white 28 points Arial Bold Title – yellow 28 points Arial Bold Body text – white24 points Arial and Arial Bold Bullets – yellow Copyright – white 12 points Arial Background name: HST-Presentation_blue.jpg, Size: Height: 7.52" Width: 10.02" Scale: 70% Position on slide: Horizontal - 0" Vertical - 0"

Species Diversity Species Diversity – the great variety of plants, animals and other organisms on Earth.

What to Study for Chapter 1 and 2 What is Life Science? Who can be one and where do they do what they do? The six steps of the scientific method Three types of scientific models and an example of each Limitations of models Advantage of SI (metric System) Metric conversions Units of SI Parts of a controlled experiment –Variables Science tools we have used in our experiment last week – their names and purpose The following vocabulary terms: Hypothesis Controlled experiment Laws Theory Prediction Technology Volume Mass Scientific Method