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

Chapter 1. Basic Concepts - Welcome — Department of Computer Science

20 Pages · 2012 · 84 KB · English

Basic Concepts Table of Contents by assisting you to understand the basic ideas and technologies and by giving you the opportunity and development of networks

Master of Science in Master of Science in Astronautical Engineering.

25 Pages · 2012 · 2.12 MB · English

engineering disciplines. • Networking power of 60,000 engineering alumni Dr. Anthony Freeman (JPL). • Dr. Keith Combines science and engineering fundamentals with specialized courses 1 engineering mathematics course.

Glencoe Science Chemistry Matter And Change Answer Key Chapter 3 PDF

4 Pages · 2016 · 22 KB · English

chemistry matter and change answer key chapter 3 PDF is available on our online library. With our online resources, you can find glencoe science 

The Intelligent Piece of Paper - Computer Science for Fun - cs4fn

5 Pages · 2012 · 93 KB · English

It also aims to start a discussion about what intelligence is and whether This can lead to a discussion of what Artificial Intelligence researchers call

Subjectivity in Psychological Science

11 Pages · 2012 · 92 KB · English

James (1890) and Wilhelm Dilthey (1996). In more recent times, various critics have challenged the assumptions and methods of scientific psychology, ranging from social psychologists con- cerned about the ecological validity of experiments (see Ar- mistead, 1974), to feminist (cf. Harding, 1992 

Sudan University of Science and Technology College of Graduate Studies Immunohistochemical ...

43 Pages · 2017 · 476 KB · English

BC incidence and mortality rates vary across the countries due to differences in risk factors (Marko, et al. 2015). Risk factors are age, cigarette smoking, excessive use of certain pain medications, treatment with alkylating agent chemotherapy drugs, family history of bladder cancer, exposure to h

a key life-history tr

12 Pages · 2011 · 458 KB · English

in order to support the large catabolic energetic and anabolic . Template shapes of gene clusters (1–6) identified by Short Time-Series Expression 

Plant Taxonomy Collection Worksheet VER 2

1 Pages · 2008 · 21 KB · English

Plant Taxonomy Collection Worksheet VER 2.doc Plant Taxonomy - BIOL 308 Plant Collection Worksheet Collection Data

Phishing on Mobile Devices - Computer Science Division | EECS at

10 Pages · 2011 · 887 KB · English

tent (e.g., high scores) with their Facebook, Twitter, or e- the HTTP web content so that the login form submits the password to the attacker’s server.

Science Perceptions of Prospective Class Teachers

12 Pages · 2017 · 1013 KB · English

The perceptions of class teachers, who will deliver science education at the elementary school, of information and science is to determine perceptions of prospective class teachers of science prospective teachers of historical concept, by Şimşek (2013) on cognitive structures about geographical.