El Segundo Unified School District

El Segundo High School

 

COURSE OF STUDY

 

Course Title:     Life Science 1AB

Department:      Science

Grade Levels:   10-12

 

COURSE DESCRIPTION

 

Life Science provides students with an introduction to biological processes. This is a course in the fundamentals of cell, plant, and animal physiology, genetics, and the ecological relationships between organisms. Students who chose a third science in High School may follow this course with Biology II.

 

 

Length: One Year

Prerequisite for Enrollment: none

Recommendation for Enrollment:  interest

Type of Course:  Satisfies the life science requirement for high school graduation

Type of Course: This course satisfies the life science requirement for high school graduation. 

 

COURSE OUTLINE AND STANDARDS

 

Ecology & Biodiversity

Characteristics of Living Things, Measurements, Tools, Cell Theory, Kingdoms of Classification

1.  Stability in an ecosystem is a balance between competing effects.  (Meaningful Integration of Core Knowledge; Effective Communication, Critical Thinking/ Problem Solving; Personal/ Social Development)

a.           Students know biodiversity is the sum total of different kinds of organisms and is affected by alterations of habitats.

b.          Students know how to analyze changes in an ecosystem resulting from changes in climate, human activity, or changes in population size or species.

c.           Students know abiotic and biotic resources determine population success.

d.          Students know energy is stored at each link of the food web, but much energy is dissipated into the environment as heat. Food chains and energy pyramids are contrasted.

Simple Organisms

            Viruses, Bacteria, and Protozoans

2.        The fundamental life processes of plants and animals depend on a variety of chemical reactions that are carried out in specialized areas of the organisms’ cells.

a.           Students know that viruses , whether living or not, invade a host’s living cell and the burst host cell frees new viruses to invade nearby cells.

b.          Students know bacteria are definitely living organisms, that a few can make their own food, and that all are not capable of photosynthesis.

c.           Students know bacteria can survive difficult environmental conditions, even off- planet.

d.          Students know protozoans are all unicellular, and are classified by their structures for movement.

e.           Students know the observable differences between Viruses, Bacteria, and Protozoans under their microscopes.

Plants

            Non-vascular Plants (Algae to Molds),

            Vascular Plants (Angiosperms, Gymnosperms, Photosynthesis)

2. (continued)  The fundamental life processes of plants and animals depend on a variety of chemical reactions that are carried out in specialized areas of the organisms’ cells.

a.          (Non-vascular plants)  Students know the differences between autotrophic, photosynthetic algae; thread-like heterotrophic fungi; symbiotic lichens, and protozoan-like symbiotic slime molds

b.          Students know the contribution of blue-green algae to planetary oxygen, and subsequent development of complex  animal life.

c.          Students know applications of algae as food products, or risks as health hazards, and demonstrate universal precautions when handling sample materials.

d.          (Vascular plants)   Students know vascular plants have leaves, stems, and roots which carry materials throughout the plants.

e.          Students know seeds and cones contain young plants, stored food, and seed coat; for sexual or asexual reproduction of the plant.

f.            Students know the process of photosynthesis by which green plants use carbon dioxide, water, and light to produce glucose and oxygen.

Cell Biology

            Cell Structure, Organization, & Function

a.          Students know the cell is a major unifying concept from protests to humans, from algae to trees; and recognize the basic structures and functions of cell organelles. 

b.          Students know that all cell processes are basically uniform: growth, reproduction, response to stimulus, diffusion, and respiration.

c.          Students know that cells specialize into groups of tissues, organs, and systems as life becomes more complex.

Animals & Physiology

            Invertebrates, Cold-blooded Vertebrates, Warm-blooded Vertebrates

3.        Mutation and sexual reproduction lead to genetic variation in a population.

a.           Students know the categories of Invertebrates include differences between Poriferans (sponges), Coelenterates (jellies), Worms, Mollusks (snails) Echinoderms (spiny –skinned marine animals)  and Arthropods (insects, spiders, &crabs)

b.          Students know that the flexible notochord develops into a backbone, and know the characteristics of five classes of cold-blooded Vertebrates including Jawless and Bony Fish, Amphibians, and Reptiles

c.           Students know the two classes within the vertebrate sub-phylum of Warm-blooded Birds, and Mammals.

d.          Students know comparative anatomical differences between Vertebrates, and understand the differing complexities determine the internal organ functions and organization.

Human Systems

            Nerves, Digestion, Circulation, Endocrine System

4.        As a result of the coordinated structures and functions of organ systems, the internal environment of the human body remains relatively stable (homeostatic) despite changes in the outside environment

a.           Students know the human skeleton by comparative study with other vertebrates  (see above)

b.          Students know the Nervous system and Endocrine systems interact to control most of their body systems.

c.           Students know the Nervous system consists of Central Nervous system (brain and spinal cord) and Peripheral Nervous system, connecting all other nerves cells in the body with the brain.

d.          Students know the Circulatory System delivers oxygen and food to all body cells, and carries away carbon dioxide and other  wastes from body cells;  controlled by the heart, which pumps blood through the capillaries, veins and arteries.

e.           Students know the balanced diet which is required for maintaining a strong, healthy body and providing a constant supply of energy for the body to function; includes proteins, carbohydrates, fats & oils, vitamins, minerals and water..

f.            Students know results of investigations comparing mechanical and chemical digestions, and comparing changed metabolic rates with physical exercise or rest.

 

Genetics and Evidence for Adaptation
5.        Evolution is the result of genetic changes that occur in constantly changing environments
6.        Genes are a set of instructions encoded in the DNA sequence of each organism that specify the sequence of amino acids in proteins characteristic of that organism.
7.
a.           Students know principles of Mendelian genetics and heredity, and their application to plants, animals, and humans. 

b.                      Students know Punnett Squares and probability explain the concepts of inherited, dominant and recessive traits, as well as incomplete dominance.

8.  Mutation and sexual reproduction lead to genetic variation in a population.

a.           Students know how the genetics’ principles relate to human genetics, inherited diseases, and sex-linked traits.

Special Topics in Life Science

        Infections, Conservation, Medical Research, Addictions

7.        The genetic composition of cells can be altered by incorporation of exogenous DNA into the cells.

a.    Students know the environmental and pre- natal changes which can cause mutations, disease, and disorders. 

 

8.        (continued)  Organisms have a variety of mechanisms to combat disease.

a.         Students know that both viruses and bacteria invade the human cells and used to be a major cause of death. Medications and preventative measures control disease-causing organisms; assisted by the Immune System. 

b.        Students know that specific lines of defense (against disease) include vaccines, and Universal precautions.

c.         Students can contrast Infectious Diseases, and Chronic Disorders, and compare the actions of specific and non-specific lines of defense.

 

INSTRUCTIONAL METHODS

 

A.            Laboratory Experiments and Activities

B.            Group Work

C.            Class Discussion and Guided Practice

D.            Class Work and Homework

E.             Short Term Projects

 

EVALUATION/ GRADING OF STUDENT WORK

 

A.              Laboratory Reports

B.               Class Participation

C.              Class Work and Homework

D.              Projects and Presentations

E.               Quizzes and Chapter Tests

F.               Comprehensive Semester Exam

 

INSTRUCTIONAL MATERIALS

 

A.              Text: Life Science by Prentice Hall, l993

B.              Laboratory Manual: Life Science by Prentice Hall, l993

C.              Laboratory Equipment & Materials

D.              Teacher’s Resource Book with “ Science Reading Skills” supplement to Life Science by Prentice Hall, l993

E.               Test Bank with Software

F.               Supplemental Text: Biology by Prentice Hall, l987

G.              Supplemental Teacher’s Resource Book with “Science Reading Skills” from Biology by Prentice Hall l987

H.              “Discovery” and “Eye Witness” Videos on chapter topics