Outline Bioassay background (5 mins)

Slides:

Advertisements

Similar presentations

What do we know about the structure of living things?

Advertisements

Framework for the Ecological Assessment of Impacted Sediments at Mining Sites in Region 7 By Jason Gunter (R7 Life Scientist) and.

Acute Effects Of Single And Mixed Polycyclic Aromatic Hydrocarbons Associated To Oil Spills On The Copepod Oithona Davisae. Carlos Barata 1, Albert Calbet.

WORLDWIDE INTEGRATED ASSESSMENT First meta-analysis of systemic pesticides - neonics 800 peer reviewed publications 29 independent scientists Environmental.

Bioassay Investigations with Daphnia Developed by Kathy Cahill Wantagh High School Wantagh, New York.

Mrs. French’s 3rd grade class class. TEKS § Science, Grade 3. (5) Investigations are used to learn about the natural world. Students should understand.

Notebook for October 2nd Pick up your Folder and staple two lab sheets together Reflect yesterday Write: Today’s Date Write down Essential Question (Explain.

Effects of Drugs on Daphnia Michelle Dilgard Undergraduate Student Education Major Biology Concentration Tennessee Technological University Cookeville,

Safe Herbicide Use Environmental Consequences Social Concerns Max Williamson.

Abstract  The Potassium Permanganate Polymer Blend 1-day release had a Lethal Concentration 50 (LC50) of 25% concentration while the 5- day release had.

Sandy Raimondo Mace G. Barron Office of Research and Development/NHEERL Gulf Ecology Division 2 November 2005 Development and Improvement of ICE/ACE for.

S1 Microscope IDL Project. Example images Fabric Daphnia Font 10 print.

Ecosystems Chapter 2 Mr. Sierra. Biotic = Abiotic = Chapter 2 - Section 1 Living Things Non-Living Things What is an “Ecosystem”?  All the different.

The Effects of Roundup® on Eisenia fetida Nathan Brownrigg Senior Capstone Spring 2005.

Mathematics and Science Partnership (MSP) Colleton County Middle School and Clemson University Department of Mathematical Sciences PDI 2 Professional Development.

Effects of Drugs on Daphnia

Topic 4 Pages  You need to filter or boil water for at least 5 min to be safe to remove Giardia, a parasite. ◦ Causes intestinal illness.

1 Chapter 8: Environmental Health and Toxicology Hong Kong residents concerned about SARS Copyright © The McGraw-Hill Companies, Inc. Permission required.

Chapter 8: Environmental Health and Toxicology

AWESOME ADAPTATIONS: USING 4 TH GRADE SCIENCE VOCABULARY JENNIFER MOLFESE March 18, 2010 TAP Meeting 1.

Effects of Drugs on Heart Rate Introduction My experiment deals with the affects of different drugs on the heart rate of daphnia. Drugs I will use include:

Appearances are Often Deceiving! A Lesson in Convergent Evolution By Devon Lee and Becky Kapley.

Abstract 61 million Americans have cardiovascular diseases (ex. high blood pressure, coronary heart disease, stroke, congestive heart failure) Staus has.

Environmental Hazards and Human Health Chapter 17.

Lecture # 12 SCIENCE 1 ASSOCIATE DEGREE IN EDUCATION Age Appropriate Science Teaching.

Integrated Science Day 8 September 24, Learning targets Learning targets 1. I can evaluate a laboratory procedure and analyze the data to form a.

Board Work What are some characteristics of living things? Which of these characteristics does each object have.

By: Carrie Bidwell (Clay High School) & Emily Zablocki (Adams High School)

Natural Chemical Cycles and Acidification Year

Poisons, Pollutants and Drugs REVIEW GAME

What is a Bioassay?. Bioassay   A bioassay involves the use of biological organism to test for chemical toxicity. Canaries are used by coal miners as.

 the natural environment of an organism  Everything that surrounds and affects an animal, including living and nonliving things.

Mercury in the Environment: Thinking critically about environmental contaminants.

Flower Power: Plant Growth and Environmental Influences GPS Standards Addressed: SB4. Students will assess the dependence of all organisms on one another.

Rise-Up  How do you measure heart-rate? Measure your heart rate with a partner, and record the results.

8. E and 4 Water Quality, Indicators, and Usage.

Science 8: Unit E: Salt and Freshwater Systems Topic 6 – Water Quality and Water Management.

Why Study Biology? Living things do not exist in isolation – depend upon other living & nonliving things. Studying biology helps to preserve organisms.

Video Clips Ch 1 1. Lab Safety rap: teachertube

Dynamic energy budgets in individual based population models

Minnesota Amphibians and Global Amphibian Decline

Lecture 10: Microcosmology

Biology 2 Up the garden path Learning outcomes

Shrimp cocktail What tools do scientist use to assess the toxicity of different compounds?

No gum, candy or chewing please! 

Trakya University Department of Biology EDIRNE TURKEY

How Do Scientists Conduct Controlled Experiments?

Change over Time Adaptation

Pesticides, People & Honey Bees

Adaptation and Survival

The Effects of Caffeine on the Heart Rate of Daphnia magna

Water Quality, Indicators, and Usage

Biology: The Study of Life

Topic 7 – Environmental Monitoring

5th Grade Science Heather Cheslock

Acute Effects Of Single And Mixed Polycyclic Aromatic Hydrocarbons Associated To Oil Spills On The Copepod Oithona Davisae . Carlos Barata1, Albert Calbet.

Have your science book open to page 74 so I may check your reading homework Thursday 2/23/17 Notebook Entry: A system is something with parts that work.

CELLS SB1. Students will analyze the nature of the relationships between structures and functions in living CELLS. Explain the role of cell organelles.

5. Impact assessment world café: Cumulative impacts

Chapter 1 Study Guide.

Topic 4: How Much is Too Much?

Do Animals Cook at 194 Degrees?

Toxicity Effects of Anionic Surfactants Sodium Dodecyl Sulphate (SDS) to Planarian Dugesia japonica Zuoqing Yuan.

Apes Ch 11 Risk, Toxicology, and Human Healthy

Daphnia Inquiry Lab Ms. Kluesner AP Biology.

how organisms relate to each other and their environment

The scientific study of human behavior and mental processes.

GEOGRAPHY Define the term geography in your own words write at least two sentences.

Systems and Scale Unit Activity 2.1 Powers of Ten

Presentation transcript:

What tools do scientists use to test the toxicity of different chemicals?

Outline Bioassay background (5 mins) Activity 1: Sublethal effects of chemicals (15-20 mins) Activity 2: Lethal effects of chemicals (15-20 mins) Discussion (5-10 mins)

Teaching Standards Environmental science standards Biology standards Recognize that humans are part of the global ecosystem and evaluate the effects of human activities on ecosystems Biology standards Assess how human activities such as pesticide use influence and modify the environment Relate animal adaptations, including behaviors, to the ability to survive stressful environmental conditions

Bioassays What is a bioassay? What is a bioindicator? What characteristics make a good bioindicator species? Sensitivity Representative of the system you are interested in?

Bioindicators

Daphnia Crustaceans- “water fleas” Filter feeders Up to 1/4th of an inch in length-easily observable under dissecting microscope Nearly translucent carapace Sensitive to environmental changes heart beat video

Acute vs Chronic effect Sublethal effects Once we choose an indicator species, how do we measure the effects of a chemical? Acute vs Chronic effect Sublethal effects Behavior Heart rate-stimulants vs. depressants Lethal effects LD50 Sublethal effects Fig 1. Effect of two insecticides on insect survival

Dose/concentration is important

Activity 1 Record baseline heart rate Sublethal effects of chemicals on Daphnia magna Record baseline heart rate Add a single drop of each solution and measure change in heart rate Ethanol, sugar solution, hot and cold water

Activity 1 Questions Which solutions showed an increase in heart rate? Which solutions showed a decrease in heart rate? Which solutions would you classify as stimulants? Depressants?

Lethal effects of chemicals on Daphnia magna Activity 2 Lethal effects of chemicals on Daphnia magna

Activity 2 Questions What toxicant did you choose to test? Why? Which toxicant concentration appeared to have little effect on the Daphnia? Can you use the results of your bioassay to make predictions about the effect of this toxicant on humans?