Life Science Worksheet

Life Science Worksheet

110 Pages · 2009 · 1.35 MB · English

A Resource Book for the Biological Science, Harcourt, Brace, and World, Inc. Grade 8. CELLS. Classroom Assessment Example SCI.III.1.MS.1. Based on all the cell samples they have observed, students will create a product providing evidence that all living Houghton Mifflin, 1967. To the Top of 

Life Science Worksheet free download

1 Life Science Worksheet GRADE LEVEL: Eight Topic: Cells Grade Level Standard: 81 Apply an understanding of cells to the functions of multicellular organisms Grade Level Benchmark: 1 Demonstrate evidence that all parts of living things are made up of cells (III1MS1) Learning Activity(s)/Facts/Information Central Question : What are cells? 1 Compare and contrast cell structure and processes 2 “Looking At Yeast Cells” Note how rapidly yeast cells increase in number  3 “Cellebration”   Activity is attached Resources Saginaw/Midland County Science Curriculum pages 14831490 Process Skills: New Vocabulary: plants, animals, tissues, organs, organ system, paramecium, elodea leaf cells, onion skin cells, human cheek cells 2 LOOKING AT YEAST CELLS OBJECTIVE Students will identify the basic functions of a cell SCIENCE PROCESSES Observing Measuring Communicating TEACHER SUGGESTIONS Introduction of cell division and growth Experiment may be extended for several lessons DESCRIPTION Looking at yeast cells and observing their growth GROUP SIZE Dependent on number of microscopes EQUIPMENT AND MATERIALS Covered glass container (quart jars) Microscopes Slides and cover slides 1/4 teaspoon yeast, powdereddry Eye droppers 1 pint warm water Table sugar PROCEDURE At least 12 hours before class, make up the following two solutions: Mixture # 1 1/4 teaspoon powdered yeast 1 pint warm water 1 Place mixture in a quart jar with a cover and let stand until dissolved 2 Mix thoroughly each time before using 3 Mixture should last one week, then a new solution should be made 3 Mixture # 2 1 cup water 1 tablespoon table sugar 1 tablespoon mixture # 1 (yeast and water) 1 Place in a jar and mix 2 Cover loosely 3 Allow to stand for 12 hours so that the yeast cells will begin to divide NOTE: At the start the yeast cells will divide rapidly in this mixture, but will stop dividing about four days later EVALUATION Discussion of questions on the following pages These pages are to be duplicated for the students ADDITIONAL RESOURCE A Resource Book for the Biological Science , Harcourt, Brace, and World, Inc TAKEN FROM Science in a Sack 4 LOOKING AT YEAST CELLS Make a slide using a small drop of yeast and table sugar mixture and a cover slip 1 What does a yeast cell look like? 2 Draw a picture of several cells 3 Can you tell the difference between a yeast cell and a small air bubble? 4 How big is a yeast cell? 5 EXAMINING YEAST CELLS THE NEXT DAY The next day make another slide of the yeast and table sugar mixture and examine it 1 Do you notice any differences in the size of the cells? 2 If so, are the cells larger or smaller than before? 3 Is there any difference in the number of cells in the area you can see? 4 If you think there is a change in the number of cells, how can you be sure? 6 HOW RAPIDLY DO YEAST CELLS INCREASE IN NUMBER? 1 Why is it important to shake or stir the mixture of yeast and table sugar before taking a sample? Examine the slide you made using a microscope: 2 How many yeast cells did you count in the area you can see? 3 What time was it when you made the count? 4 If your microscope has more than one eyepiece, which one did you use? 5 Which objective lens did you use? 6 Why must you use the same lenses each time you make a count? Now move the slide and count another group of cells: 7 How many cells did you count this time? 8 Why is it important to count more than one area of your sample? 9 What is the average of the counts you have made? 7 (1) (2) (3) (4) (5) CELL EBRATION You are going to examine a variety of cells under the microscope Remember that the thinner the specimens are, the clearer the cells will appear All of the specimens must be wet mounted This means that you must be sure that the specimen is wet, and then you must press it flat against the slide Add the appropriate dye, spread it evenly over the specimen, and set a cover slip on top Tap the cover slip gently to remove any bubbles Examine the specimen under LOW POWER ONLY 1 E LODEA LEAF

------------- Read More -------------

Download life-science-worksheet.pdf

Life Science Worksheet related documents

Introduction - Actuarial Science

1 Pages · 2009 · 43 KB · English

ACTUARIAL SCIENCE? Actuaries are skilled in assessing the financial impact of tomorrow’s uncertain events. PREPARATION OUTLINE . DURATION . WHO IS ELIGIBLE?

Actuarial Science in Eastern Europe Krzysztof Stroifiski The

4 Pages · 2000 · 111 KB · English

Actuarial Science in Eastern Europe Krzysztof Stroifiski The University of Western Ontario With and outline some ways of meeting the demand.

SCIENCE CHINA Non-coding regions of the Ebola virus genome contain indispensable ...

5 Pages · 2015 · 441 KB · English

In March 2014, the World Health Organization (WHO) was notified of an Ebola virus (EBOV) outbreak in Guinea [1]. To March 15, 2015, there are 24,701 confirmed, suspected or probable cases in nine countries (Guinea, Liberia, Sierra. Leone, Mali, Nigeria, Senegal, Spain, United Kingdom and.


22 Pages · 2012 · 1.2 MB · English

FORENSIC SCIENCE LABORATORIES 2011 ANNUAL REPORT HISTORY The Forensic Science Laboratories are accredited by the American Society of Crime Laboratory

Sam Houston State University Society of Forensic Science

1 Pages · 2009 · 390 KB · English

Select Your Design: Sam Houston State University Society of Forensic Science T-Shirt Order Form Please Ship My Order To: Phone/Email: Address: Name: SHSU SFS Official

Forensic Science Masters of Science Program

42 Pages · 2012 · 2.06 MB · English

Forensic Science Masters Clinical Laboratory Education, 2nd ed., American Society for Clinical Laboratory Science, Kendall/Hunt Publishing Company, 1996.

Basic Science for Clinicians

14 Pages · 2010 · 1.54 MB · English

of proportion to heart rate and oxygen consumption. QOL indicates quality of life; SQL, Sensor and health-related Quality of Life .. References. 1.

Diploma in Library Science - Swami Keshwanand Memorial College, Abohar

12 Pages · 2010 · 112 KB · English

1 ORDINANCES DIPLOMA IN LIBRARY SCIENCE 1. The Programme This is a one year course through distance education mode leading to the Diploma in Library Science.

Course Outline of Master of Library and Information Science MLISc

1 Pages · 2013 · 42 KB · English

Gulbarga University Course Outline and Syllabus for Master of Library and Information Science (MLISc) under CBCS and CAGP Third HC3.1 Research Methods and Statistical

Forensic Science and CF84 Psychology - Staffordshire University

4 Pages · 2011 · 911 KB · English

Forensic Science Society and the British Psychological Society. Key Facts This degree opens a wide range of exciting career opportunities.